diff --git a/R/ISOAnchor.R b/R/ISOAnchor.R
index 1b5ab573..7a379e3b 100644
--- a/R/ISOAnchor.R
+++ b/R/ISOAnchor.R
@@ -20,7 +20,10 @@ ISOAnchor <- R6Class("ISOAnchor",
    inherit = ISOAbstractObject,
    private = list(
      xmlElement = "Anchor",
-     xmlNamespacePrefix = "GMX"
+     xmlNamespacePrefix = list(
+       "19115-1/2" = "GMX",
+       "19115-3" = "GCX"
+     )
    ),
    public = list(
      
diff --git a/R/ISOFileName.R b/R/ISOFileName.R
index 7d5336a9..980f1505 100644
--- a/R/ISOFileName.R
+++ b/R/ISOFileName.R
@@ -20,7 +20,10 @@ ISOFileName <- R6Class("ISOFileName",
   inherit = ISOAbstractObject,
   private = list(
     xmlElement = "FileName",
-    xmlNamespacePrefix = "GMX"
+    xmlNamespacePrefix = list(
+      "19115-1/2" = "GMX",
+      "19115-3" = "GCX"
+    )
   ),
   public = list(
     #'@field attrs attrs
diff --git a/R/ISOMimeFileType.R b/R/ISOMimeFileType.R
index fab0dabb..d4952559 100644
--- a/R/ISOMimeFileType.R
+++ b/R/ISOMimeFileType.R
@@ -20,7 +20,10 @@ ISOMimeFileType <- R6Class("ISOMimeFileType",
      inherit = ISOAbstractObject,
      private = list(
        xmlElement = "MimeFileType",
-       xmlNamespacePrefix = "GMX"
+       xmlNamespacePrefix = list(
+         "19115-1/2" = "GMX",
+         "19115-3" = "GCX"
+       )
      ),
      public = list(
        
diff --git a/inst/extdata/coverage/geometa_coverage_inventory.csv b/inst/extdata/coverage/geometa_coverage_inventory.csv
index 4ba080b8..1d4a92fc 100644
--- a/inst/extdata/coverage/geometa_coverage_inventory.csv
+++ b/inst/extdata/coverage/geometa_coverage_inventory.csv
@@ -231,7 +231,7 @@
 "ISO/TS 19139:2007","ISO/TS 19103:2005","Geographic Common extensible markup language","GCO","UnlimitedInteger","ISOUnlimitedInteger",TRUE,TRUE,"ISO/TS 19139:2007  -  ISO/TS 19103:2005  -  GCO"
 "ISO/TS 19139:2007","ISO/TS 19139:2007","Geographic Metadata XML Schema","GMX","AbstractCT_Catalogue","ISOAbstractCatalogue",TRUE,FALSE,"ISO/TS 19139:2007  -  ISO/TS 19139:2007  -  GMX"
 "ISO/TS 19139:2007","ISO/TS 19139:2007","Geographic Metadata XML Schema","GMX","AbstractMX_File","<missing>",FALSE,FALSE,"ISO/TS 19139:2007  -  ISO/TS 19139:2007  -  GMX"
-"ISO/TS 19139:2007","ISO/TS 19139:2007","Geographic Metadata XML Schema","GMX","Anchor","ISOAnchor",TRUE,FALSE,"ISO/TS 19139:2007  -  ISO/TS 19139:2007  -  GMX"
+"ISO/TS 19139:2007","ISO/TS 19139:2007","Geographic Metadata XML Schema","GMX","Anchor","ISOAnchor",TRUE,TRUE,"ISO/TS 19139:2007  -  ISO/TS 19139:2007  -  GMX"
 "ISO/TS 19139:2007","ISO/TS 19139:2007","Geographic Metadata XML Schema","GMX","ClAlternativeExpression","<missing>",FALSE,FALSE,"ISO/TS 19139:2007  -  ISO/TS 19139:2007  -  GMX"
 "ISO/TS 19139:2007","ISO/TS 19139:2007","Geographic Metadata XML Schema","GMX","CodeAlternativeExpression","<missing>",FALSE,FALSE,"ISO/TS 19139:2007  -  ISO/TS 19139:2007  -  GMX"
 "ISO/TS 19139:2007","ISO/TS 19139:2007","Geographic Metadata XML Schema","GMX","CodeDefinition","ISOCodeDefinition",TRUE,TRUE,"ISO/TS 19139:2007  -  ISO/TS 19139:2007  -  GMX"
@@ -244,8 +244,8 @@
 "ISO/TS 19139:2007","ISO/TS 19139:2007","Geographic Metadata XML Schema","GMX","CT_UomCatalogue","<missing>",FALSE,FALSE,"ISO/TS 19139:2007  -  ISO/TS 19139:2007  -  GMX"
 "ISO/TS 19139:2007","ISO/TS 19139:2007","Geographic Metadata XML Schema","GMX","DatumAlt","<missing>",FALSE,FALSE,"ISO/TS 19139:2007  -  ISO/TS 19139:2007  -  GMX"
 "ISO/TS 19139:2007","ISO/TS 19139:2007","Geographic Metadata XML Schema","GMX","EllipsoidAlt","<missing>",FALSE,FALSE,"ISO/TS 19139:2007  -  ISO/TS 19139:2007  -  GMX"
-"ISO/TS 19139:2007","ISO/TS 19139:2007","Geographic Metadata XML Schema","GMX","FileName","ISOFileName",TRUE,FALSE,"ISO/TS 19139:2007  -  ISO/TS 19139:2007  -  GMX"
-"ISO/TS 19139:2007","ISO/TS 19139:2007","Geographic Metadata XML Schema","GMX","MimeFileType","ISOMimeFileType",TRUE,FALSE,"ISO/TS 19139:2007  -  ISO/TS 19139:2007  -  GMX"
+"ISO/TS 19139:2007","ISO/TS 19139:2007","Geographic Metadata XML Schema","GMX","FileName","ISOFileName",TRUE,TRUE,"ISO/TS 19139:2007  -  ISO/TS 19139:2007  -  GMX"
+"ISO/TS 19139:2007","ISO/TS 19139:2007","Geographic Metadata XML Schema","GMX","MimeFileType","ISOMimeFileType",TRUE,TRUE,"ISO/TS 19139:2007  -  ISO/TS 19139:2007  -  GMX"
 "ISO/TS 19139:2007","ISO/TS 19139:2007","Geographic Metadata XML Schema","GMX","ML_AffineCS","<missing>",FALSE,FALSE,"ISO/TS 19139:2007  -  ISO/TS 19139:2007  -  GMX"
 "ISO/TS 19139:2007","ISO/TS 19139:2007","Geographic Metadata XML Schema","GMX","ML_BaseUnit","<missing>",FALSE,FALSE,"ISO/TS 19139:2007  -  ISO/TS 19139:2007  -  GMX"
 "ISO/TS 19139:2007","ISO/TS 19139:2007","Geographic Metadata XML Schema","GMX","ML_CartesianCS","<missing>",FALSE,FALSE,"ISO/TS 19139:2007  -  ISO/TS 19139:2007  -  GMX"
@@ -545,9 +545,9 @@
 "ISO/TS 19115-3:2016","ISO 19115-1:2014","Geospatial COmmon Objects (GCO) Version: 1.0","GCO","TypeName","ISOTypeName",TRUE,TRUE,"ISO/TS 19115-3:2016  -  ISO 19115-1:2014  -  GCO"
 "ISO/TS 19115-3:2016","ISO 19115-1:2014","Geospatial COmmon Objects (GCO) Version: 1.0","GCO","UnlimitedInteger","ISOUnlimitedInteger",TRUE,TRUE,"ISO/TS 19115-3:2016  -  ISO 19115-1:2014  -  GCO"
 "ISO/TS 19115-3:2016","ISO 19115-1:2014","Geospatial COmmon Objects (GCO) Version: 1.0","GCO","UomIdentifier","<missing>",FALSE,FALSE,"ISO/TS 19115-3:2016  -  ISO 19115-1:2014  -  GCO"
-"ISO/TS 19115-3:2016","ISO 19115-1:2014","Geospatial Common eXtension (GCX) Version: 1.0","GCX","Anchor","<missing>",FALSE,FALSE,"ISO/TS 19115-3:2016  -  ISO 19115-1:2014  -  GCX"
-"ISO/TS 19115-3:2016","ISO 19115-1:2014","Geospatial Common eXtension (GCX) Version: 1.0","GCX","FileName","<missing>",FALSE,FALSE,"ISO/TS 19115-3:2016  -  ISO 19115-1:2014  -  GCX"
-"ISO/TS 19115-3:2016","ISO 19115-1:2014","Geospatial Common eXtension (GCX) Version: 1.0","GCX","MimeFileType","<missing>",FALSE,FALSE,"ISO/TS 19115-3:2016  -  ISO 19115-1:2014  -  GCX"
+"ISO/TS 19115-3:2016","ISO 19115-1:2014","Geospatial Common eXtension (GCX) Version: 1.0","GCX","Anchor","ISOAnchor",TRUE,TRUE,"ISO/TS 19115-3:2016  -  ISO 19115-1:2014  -  GCX"
+"ISO/TS 19115-3:2016","ISO 19115-1:2014","Geospatial Common eXtension (GCX) Version: 1.0","GCX","FileName","ISOFileName",TRUE,TRUE,"ISO/TS 19115-3:2016  -  ISO 19115-1:2014  -  GCX"
+"ISO/TS 19115-3:2016","ISO 19115-1:2014","Geospatial Common eXtension (GCX) Version: 1.0","GCX","MimeFileType","ISOMimeFileType",TRUE,TRUE,"ISO/TS 19115-3:2016  -  ISO 19115-1:2014  -  GCX"
 "ISO/TS 19115-3:2016","ISO 19115-1:2014","Geospatial EXtent (GEX) Version: 1.0","GEX","AbstractEX_GeographicExtent","ISOGeographicExtent",TRUE,TRUE,"ISO/TS 19115-3:2016  -  ISO 19115-1:2014  -  GEX"
 "ISO/TS 19115-3:2016","ISO 19115-1:2014","Geospatial EXtent (GEX) Version: 1.0","GEX","EX_BoundingPolygon","ISOBoundingPolygon",TRUE,TRUE,"ISO/TS 19115-3:2016  -  ISO 19115-1:2014  -  GEX"
 "ISO/TS 19115-3:2016","ISO 19115-1:2014","Geospatial EXtent (GEX) Version: 1.0","GEX","EX_Extent","ISOExtent",TRUE,TRUE,"ISO/TS 19115-3:2016  -  ISO 19115-1:2014  -  GEX"
@@ -627,8 +627,8 @@
 "ISO/TS 19115-3:2016","ISO 19115-1:2014","Metadata for COnstraints (MCO) Version: 1.0","MCO","MD_SecurityConstraints","<missing>",FALSE,FALSE,"ISO/TS 19115-3:2016  -  ISO 19115-1:2014  -  MCO"
 "ISO/TS 19115-3:2016","ISO 19115-1:2014","MetaData Base (MDB) Version: 2.0","MDB","MD_Metadata","ISOMetadata",TRUE,TRUE,"ISO/TS 19115-3:2016  -  ISO 19115-1:2014  -  MDB"
 "ISO/TS 19115-3:2016","ISO 19115-1:2014","MetaData Base (MDB) Version: 2.0","MDB","MD_MetadataScope","ISOMetadataScope",TRUE,TRUE,"ISO/TS 19115-3:2016  -  ISO 19115-1:2014  -  MDB"
-"ISO/TS 19115-3:2016","ISO 19115-1:2014","Metadata for Maintennce Information (MMI) Version: 1.0","MMI","MD_MaintenanceFrequencyCode","<missing>",FALSE,FALSE,"ISO/TS 19115-3:2016  -  ISO 19115-1:2014  -  MMI"
-"ISO/TS 19115-3:2016","ISO 19115-1:2014","Metadata for Maintennce Information (MMI) Version: 1.0","MMI","MD_MaintenanceInformation","<missing>",FALSE,FALSE,"ISO/TS 19115-3:2016  -  ISO 19115-1:2014  -  MMI"
+"ISO/TS 19115-3:2016","ISO 19115-1:2014","Metadata for Maintenance Information (MMI) Version: 1.0","MMI","MD_MaintenanceFrequencyCode","<missing>",FALSE,FALSE,"ISO/TS 19115-3:2016  -  ISO 19115-1:2014  -  MMI"
+"ISO/TS 19115-3:2016","ISO 19115-1:2014","Metadata for Maintenance Information (MMI) Version: 1.0","MMI","MD_MaintenanceInformation","<missing>",FALSE,FALSE,"ISO/TS 19115-3:2016  -  ISO 19115-1:2014  -  MMI"
 "ISO/TS 19115-3:2016","ISO 19115-1:2014","Metadata for Portrayal Catalogues (MPC) Version: 1.0","MPC","MD_PortrayalCatalogueReference","<missing>",FALSE,FALSE,"ISO/TS 19115-3:2016  -  ISO 19115-1:2014  -  MPC"
 "ISO/TS 19115-3:2016","ISO 19115-1:2014","Metadata for Resource Content (MRC) Version: 1.0","MRC","AbstractMD_ContentInformation","<missing>",FALSE,FALSE,"ISO/TS 19115-3:2016  -  ISO 19115-1:2014  -  MRC"
 "ISO/TS 19115-3:2016","ISO 19115-1:2014","Metadata for Resource Content (MRC) Version: 1.0","MRC","MD_AttributeGroup","<missing>",FALSE,FALSE,"ISO/TS 19115-3:2016  -  ISO 19115-1:2014  -  MRC"
diff --git a/inst/extdata/coverage/geometa_coverage_summary.csv b/inst/extdata/coverage/geometa_coverage_summary.csv
index da5771ce..95f97762 100644
--- a/inst/extdata/coverage/geometa_coverage_summary.csv
+++ b/inst/extdata/coverage/geometa_coverage_summary.csv
@@ -1,7 +1,7 @@
 "Specification","Schema","Title","Namespace","Supported","Missing","Refactored","Torefactor","Coverage"
 "ISO/TS 19115-3:2016","ISO 19115-1:2014","Citation and responsible party information (CIT) Version: 2.0","CIT",11,5,11,5,68.75
 "ISO/TS 19115-3:2016","ISO 19115-1:2014","Geospatial COmmon Objects (GCO) Version: 1.0","GCO",22,2,22,2,91.67
-"ISO/TS 19115-3:2016","ISO 19115-1:2014","Geospatial Common eXtension (GCX) Version: 1.0","GCX",0,3,0,3,0
+"ISO/TS 19115-3:2016","ISO 19115-1:2014","Geospatial Common eXtension (GCX) Version: 1.0","GCX",3,0,3,0,100
 "ISO/TS 19115-3:2016","ISO 19115-1:2014","Geospatial EXtent (GEX) Version: 1.0","GEX",8,0,8,0,100
 "ISO/TS 19115-3:2016","ISO 19115-1:2014","metadata for LANguage and localization (LAN) Version: 1.0","LAN",7,0,7,0,100
 "ISO/TS 19115-3:2016","ISO 19115-1:2014","Metadata for ACquisition (MAC) Version: 2.0","MAC",0,24,0,24,0
@@ -9,7 +9,7 @@
 "ISO/TS 19115-3:2016","ISO 19115-1:2014","Metadata Common Classes (MCC) Version: 1.0","MCC",6,25,6,25,19.35
 "ISO/TS 19115-3:2016","ISO 19115-1:2014","Metadata for COnstraints (MCO) Version: 1.0","MCO",0,6,0,6,0
 "ISO/TS 19115-3:2016","ISO 19115-1:2014","MetaData Base (MDB) Version: 2.0","MDB",2,0,2,0,100
-"ISO/TS 19115-3:2016","ISO 19115-1:2014","Metadata for Maintennce Information (MMI) Version: 1.0","MMI",0,2,0,2,0
+"ISO/TS 19115-3:2016","ISO 19115-1:2014","Metadata for Maintenance Information (MMI) Version: 1.0","MMI",0,2,0,2,0
 "ISO/TS 19115-3:2016","ISO 19115-1:2014","Metadata for Portrayal Catalogues (MPC) Version: 1.0","MPC",0,1,0,1,0
 "ISO/TS 19115-3:2016","ISO 19115-1:2014","Metadata for Resource Content (MRC) Version: 1.0","MRC",0,19,0,19,0
 "ISO/TS 19115-3:2016","ISO 19115-1:2014","Metadata for Resource Distribution (MRD) Version: 1.0","MRD",0,7,0,7,0
@@ -27,7 +27,7 @@
 "ISO/TS 19139:2007","ISO 19115-2:2009","Geographic Information - Metadata - Part 2: Extensions for imagery and gridded data","GMI",40,0,0,40,100
 "ISO/TS 19139:2007","ISO 19119:2005","Geographic Information - Service Metadata","SRV",7,12,0,19,36.84
 "ISO/TS 19139:2007","ISO/TS 19103:2005","Geographic Common extensible markup language","GCO",22,0,22,0,100
-"ISO/TS 19139:2007","ISO/TS 19139:2007","Geographic Metadata XML Schema","GMX",10,56,5,61,15.15
+"ISO/TS 19139:2007","ISO/TS 19139:2007","Geographic Metadata XML Schema","GMX",10,56,8,58,15.15
 "ISO/TS 19139:2007","ISO/TS 19139:2007","Geographic Metadata XML Schema - Geographic Temporal Schema (GTS)","GTS",0,1,0,1,0
 "GML 3.2.1 (ISO 19136)","GML 3.2.1 (ISO 19136)","Geographic Markup Language","GML",62,107,0,169,36.69
 "GML 3.2.1 Coverage (OGC GMLCOV)","GML 3.2.1 Coverage (OGC GMLCOV)","OGC GML Coverage Implementation Schema","GMLCOV",1,4,0,5,20
diff --git a/inst/extdata/coverage/geometa_coverage_summary.html b/inst/extdata/coverage/geometa_coverage_summary.html
index 6a7e7162..6b792b4c 100644
--- a/inst/extdata/coverage/geometa_coverage_summary.html
+++ b/inst/extdata/coverage/geometa_coverage_summary.html
@@ -406,11 +406,11 @@
 <td align="left">ISO 19115-1:2014</td>
 <td align="left">Geospatial Common eXtension (GCX) Version: 1.0</td>
 <td align="left">GCX</td>
-<td align="left"><a href="https://github.com/eblondel/geometa"><img src="data:image/svg+xml;charset=utf-8;base64,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" alt="ISO/TS 19115-3:2016 - ISO 19115-1:2014 - GCX" /></a></td>
-<td align="right">0</td>
+<td align="left"><a href="https://github.com/eblondel/geometa"><img src="data:image/svg+xml;charset=utf-8;base64,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" alt="ISO/TS 19115-3:2016 - ISO 19115-1:2014 - GCX" /></a></td>
 <td align="right">3</td>
 <td align="right">0</td>
 <td align="right">3</td>
+<td align="right">0</td>
 </tr>
 <tr class="even">
 <td align="left">ISO/TS 19115-3:2016</td>
@@ -494,7 +494,7 @@
 <tr class="odd">
 <td align="left">ISO/TS 19115-3:2016</td>
 <td align="left">ISO 19115-1:2014</td>
-<td align="left">Metadata for Maintennce Information (MMI) Version:
+<td align="left">Metadata for Maintenance Information (MMI) Version:
 1.0</td>
 <td align="left">MMI</td>
 <td align="left"><a href="https://github.com/eblondel/geometa"><img src="data:image/svg+xml;charset=utf-8;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHhtbG5zOnhsaW5rPSJodHRwOi8vd3d3LnczLm9yZy8xOTk5L3hsaW5rIiB3aWR0aD0iMjkiIGhlaWdodD0iMjAiIHJvbGU9ImltZyIgYXJpYS1sYWJlbD0iMCUiPjx0aXRsZT4wJTwvdGl0bGU+PGxpbmVhckdyYWRpZW50IGlkPSJzIiB4Mj0iMCIgeTI9IjEwMCUiPjxzdG9wIG9mZnNldD0iMCIgc3RvcC1jb2xvcj0iI2JiYiIgc3RvcC1vcGFjaXR5PSIuMSIvPjxzdG9wIG9mZnNldD0iMSIgc3RvcC1vcGFjaXR5PSIuMSIvPjwvbGluZWFyR3JhZGllbnQ+PGNsaXBQYXRoIGlkPSJyIj48cmVjdCB3aWR0aD0iMjkiIGhlaWdodD0iMjAiIHJ4PSIzIiBmaWxsPSIjZmZmIi8+PC9jbGlwUGF0aD48ZyBjbGlwLXBhdGg9InVybCgjcikiPjxyZWN0IHdpZHRoPSIwIiBoZWlnaHQ9IjIwIiBmaWxsPSIjYWQwZjBmIi8+PHJlY3QgeD0iMCIgd2lkdGg9IjI5IiBoZWlnaHQ9IjIwIiBmaWxsPSIjYWQwZjBmIi8+PHJlY3Qgd2lkdGg9IjI5IiBoZWlnaHQ9IjIwIiBmaWxsPSJ1cmwoI3MpIi8+PC9nPjxnIGZpbGw9IiNmZmYiIHRleHQtYW5jaG9yPSJtaWRkbGUiIGZvbnQtZmFtaWx5PSJWZXJkYW5hLEdlbmV2YSxEZWphVnUgU2FucyxzYW5zLXNlcmlmIiB0ZXh0LXJlbmRlcmluZz0iZ2VvbWV0cmljUHJlY2lzaW9uIiBmb250LXNpemU9IjExMCI+PHRleHQgYXJpYS1oaWRkZW49InRydWUiIHg9IjE0NSIgeT0iMTUwIiBmaWxsPSIjMDEwMTAxIiBmaWxsLW9wYWNpdHk9Ii4zIiB0cmFuc2Zvcm09InNjYWxlKC4xKSIgdGV4dExlbmd0aD0iMTkwIj4wJTwvdGV4dD48dGV4dCB4PSIxNDUiIHk9IjE0MCIgdHJhbnNmb3JtPSJzY2FsZSguMSkiIGZpbGw9IiNmZmYiIHRleHRMZW5ndGg9IjE5MCI+MCU8L3RleHQ+PC9nPjwvc3ZnPg==" alt="ISO/TS 19115-3:2016 - ISO 19115-1:2014 - MMI" /></a></td>
@@ -704,8 +704,8 @@
 <td align="left"><a href="https://github.com/eblondel/geometa"><img src="data:image/svg+xml;charset=utf-8;base64,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" alt="ISO/TS 19139:2007 - ISO/TS 19139:2007 - GMX" /></a></td>
 <td align="right">10</td>
 <td align="right">56</td>
-<td align="right">5</td>
-<td align="right">61</td>
+<td align="right">8</td>
+<td align="right">58</td>
 </tr>
 <tr class="even">
 <td align="left">ISO/TS 19139:2007</td>
diff --git a/inst/extdata/coverage/geometa_coverage_summary.md b/inst/extdata/coverage/geometa_coverage_summary.md
index 7c9ad4ef..f2fedfd1 100644
--- a/inst/extdata/coverage/geometa_coverage_summary.md
+++ b/inst/extdata/coverage/geometa_coverage_summary.md
@@ -2,7 +2,7 @@
 |:------------------------------------|:------------------------------------|:-----------------------------------------------------------------------------------|:---------|:----------------------------------------------------------------------------------------------------------------------------------|---------:|-------:|----------:|----------:|
 |ISO/TS 19115-3:2016                  |ISO 19115-1:2014                     |Citation and responsible party information (CIT) Version: 2.0                       |CIT       |[![ISO/TS 19115-3:2016  -  ISO 19115-1:2014  -  CIT](https://img.shields.io/badge/-69%25-f2eb24.svg)](https://github.com/eblondel/geometa)|        11|       5|         11|          5|
 |ISO/TS 19115-3:2016                  |ISO 19115-1:2014                     |Geospatial COmmon Objects (GCO) Version: 1.0                                        |GCO       |[![ISO/TS 19115-3:2016  -  ISO 19115-1:2014  -  GCO](https://img.shields.io/badge/-92%25-33cc7a.svg)](https://github.com/eblondel/geometa)|        22|       2|         22|          2|
-|ISO/TS 19115-3:2016                  |ISO 19115-1:2014                     |Geospatial Common eXtension (GCX) Version: 1.0                                      |GCX       |[![ISO/TS 19115-3:2016  -  ISO 19115-1:2014  -  GCX](https://img.shields.io/badge/-0%25-ad0f0f.svg)](https://github.com/eblondel/geometa)|         0|       3|          0|          3|
+|ISO/TS 19115-3:2016                  |ISO 19115-1:2014                     |Geospatial Common eXtension (GCX) Version: 1.0                                      |GCX       |[![ISO/TS 19115-3:2016  -  ISO 19115-1:2014  -  GCX](https://img.shields.io/badge/-100%25-4a4ea8.svg)](https://github.com/eblondel/geometa)|         3|       0|          3|          0|
 |ISO/TS 19115-3:2016                  |ISO 19115-1:2014                     |Geospatial EXtent (GEX) Version: 1.0                                                |GEX       |[![ISO/TS 19115-3:2016  -  ISO 19115-1:2014  -  GEX](https://img.shields.io/badge/-100%25-4a4ea8.svg)](https://github.com/eblondel/geometa)|         8|       0|          8|          0|
 |ISO/TS 19115-3:2016                  |ISO 19115-1:2014                     |metadata for LANguage and localization (LAN) Version: 1.0                           |LAN       |[![ISO/TS 19115-3:2016  -  ISO 19115-1:2014  -  LAN](https://img.shields.io/badge/-100%25-4a4ea8.svg)](https://github.com/eblondel/geometa)|         7|       0|          7|          0|
 |ISO/TS 19115-3:2016                  |ISO 19115-1:2014                     |Metadata for ACquisition (MAC) Version: 2.0                                         |MAC       |[![ISO/TS 19115-3:2016  -  ISO 19115-1:2014  -  MAC](https://img.shields.io/badge/-0%25-ad0f0f.svg)](https://github.com/eblondel/geometa)|         0|      24|          0|         24|
@@ -10,7 +10,7 @@
 |ISO/TS 19115-3:2016                  |ISO 19115-1:2014                     |Metadata Common Classes (MCC) Version: 1.0                                          |MCC       |[![ISO/TS 19115-3:2016  -  ISO 19115-1:2014  -  MCC](https://img.shields.io/badge/-19%25-ad0f0f.svg)](https://github.com/eblondel/geometa)|         6|      25|          6|         25|
 |ISO/TS 19115-3:2016                  |ISO 19115-1:2014                     |Metadata for COnstraints (MCO) Version: 1.0                                         |MCO       |[![ISO/TS 19115-3:2016  -  ISO 19115-1:2014  -  MCO](https://img.shields.io/badge/-0%25-ad0f0f.svg)](https://github.com/eblondel/geometa)|         0|       6|          0|          6|
 |ISO/TS 19115-3:2016                  |ISO 19115-1:2014                     |MetaData Base (MDB) Version: 2.0                                                    |MDB       |[![ISO/TS 19115-3:2016  -  ISO 19115-1:2014  -  MDB](https://img.shields.io/badge/-100%25-4a4ea8.svg)](https://github.com/eblondel/geometa)|         2|       0|          2|          0|
-|ISO/TS 19115-3:2016                  |ISO 19115-1:2014                     |Metadata for Maintennce Information (MMI) Version: 1.0                              |MMI       |[![ISO/TS 19115-3:2016  -  ISO 19115-1:2014  -  MMI](https://img.shields.io/badge/-0%25-ad0f0f.svg)](https://github.com/eblondel/geometa)|         0|       2|          0|          2|
+|ISO/TS 19115-3:2016                  |ISO 19115-1:2014                     |Metadata for Maintenance Information (MMI) Version: 1.0                             |MMI       |[![ISO/TS 19115-3:2016  -  ISO 19115-1:2014  -  MMI](https://img.shields.io/badge/-0%25-ad0f0f.svg)](https://github.com/eblondel/geometa)|         0|       2|          0|          2|
 |ISO/TS 19115-3:2016                  |ISO 19115-1:2014                     |Metadata for Portrayal Catalogues (MPC) Version: 1.0                                |MPC       |[![ISO/TS 19115-3:2016  -  ISO 19115-1:2014  -  MPC](https://img.shields.io/badge/-0%25-ad0f0f.svg)](https://github.com/eblondel/geometa)|         0|       1|          0|          1|
 |ISO/TS 19115-3:2016                  |ISO 19115-1:2014                     |Metadata for Resource Content (MRC) Version: 1.0                                    |MRC       |[![ISO/TS 19115-3:2016  -  ISO 19115-1:2014  -  MRC](https://img.shields.io/badge/-0%25-ad0f0f.svg)](https://github.com/eblondel/geometa)|         0|      19|          0|         19|
 |ISO/TS 19115-3:2016                  |ISO 19115-1:2014                     |Metadata for Resource Distribution (MRD) Version: 1.0                               |MRD       |[![ISO/TS 19115-3:2016  -  ISO 19115-1:2014  -  MRD](https://img.shields.io/badge/-0%25-ad0f0f.svg)](https://github.com/eblondel/geometa)|         0|       7|          0|          7|
@@ -28,7 +28,7 @@
 |ISO/TS 19139:2007                    |ISO 19115-2:2009                     |Geographic Information - Metadata - Part 2: Extensions for imagery and gridded data |GMI       |[![ISO/TS 19139:2007  -  ISO 19115-2:2009  -  GMI](https://img.shields.io/badge/-100%25-4a4ea8.svg)](https://github.com/eblondel/geometa)|        40|       0|          0|         40|
 |ISO/TS 19139:2007                    |ISO 19119:2005                       |Geographic Information - Service Metadata                                           |SRV       |[![ISO/TS 19139:2007  -  ISO 19119:2005  -  SRV](https://img.shields.io/badge/-37%25-ff0c0c.svg)](https://github.com/eblondel/geometa)|         7|      12|          0|         19|
 |ISO/TS 19139:2007                    |ISO/TS 19103:2005                    |Geographic Common extensible markup language                                        |GCO       |[![ISO/TS 19139:2007  -  ISO/TS 19103:2005  -  GCO](https://img.shields.io/badge/-100%25-4a4ea8.svg)](https://github.com/eblondel/geometa)|        22|       0|         22|          0|
-|ISO/TS 19139:2007                    |ISO/TS 19139:2007                    |Geographic Metadata XML Schema                                                      |GMX       |[![ISO/TS 19139:2007  -  ISO/TS 19139:2007  -  GMX](https://img.shields.io/badge/-15%25-ad0f0f.svg)](https://github.com/eblondel/geometa)|        10|      56|          5|         61|
+|ISO/TS 19139:2007                    |ISO/TS 19139:2007                    |Geographic Metadata XML Schema                                                      |GMX       |[![ISO/TS 19139:2007  -  ISO/TS 19139:2007  -  GMX](https://img.shields.io/badge/-15%25-ad0f0f.svg)](https://github.com/eblondel/geometa)|        10|      56|          8|         58|
 |ISO/TS 19139:2007                    |ISO/TS 19139:2007                    |Geographic Metadata XML Schema - Geographic Temporal Schema (GTS)                   |GTS       |[![ISO/TS 19139:2007  -  ISO/TS 19139:2007  -  GTS](https://img.shields.io/badge/-0%25-ad0f0f.svg)](https://github.com/eblondel/geometa)|         0|       1|          0|          1|
 |GML 3.2.1 (ISO 19136)                |GML 3.2.1 (ISO 19136)                |Geographic Markup Language                                                          |GML       |[![GML 3.2.1 (ISO 19136)  -  GML 3.2.1 (ISO 19136)  -  GML](https://img.shields.io/badge/-37%25-ff0c0c.svg)](https://github.com/eblondel/geometa)|        62|     107|          0|        169|
 |GML 3.2.1 Coverage (OGC GMLCOV)      |GML 3.2.1 Coverage (OGC GMLCOV)      |OGC GML Coverage Implementation Schema                                              |GMLCOV    |[![GML 3.2.1 Coverage (OGC GMLCOV)  -  GML 3.2.1 Coverage (OGC GMLCOV)  -  GMLCOV](https://img.shields.io/badge/-20%25-ff0c0c.svg)](https://github.com/eblondel/geometa)|         1|       4|          0|          5|