Addressed issue #281

disciplines/units/sidimensionalunits.ttl

@@ -1572,6 +1572,7 @@ We kindly acknowledge NIST for reusing their content, including the physical dim
 ###  https://w3id.org/emmo#EMMO_9895a1b4_f0a5_4167_ac5e_97db40b8bfcc
 :EMMO_9895a1b4_f0a5_4167_ac5e_97db40b8bfcc rdf:type owl:Class ;
                                            rdfs:subClassOf :EMMO_cbdea88b_fef1_4c7c_b69f_ae1f0f241c4a ;
+                                           rdfs:seeAlso "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf"^^xsd:anyURI ;
                                            skos:prefLabel "SIDimensionalUnit"@en ;
                                            :EMMO_967080e5_2f42_4eb2_a3a9_c58143e835f9 "Dimensional unit with its physical dimensionality described accortind to the International System of Units (SI)."@en ;
                                            :EMMO_c7b62dd7_063a_4c2a_8504_42f7264ba83f """In SI are the physical dimensions of the base quantities time (T), length (L), mass (M), electric current (I), thermodynamic temperature (Θ), amount of substance (N) and luminous intensity (J).
@@ -1587,7 +1588,7 @@ The SI dimensional units are equivalent to dimensional strings that uniquely def
 
 ^T([+-][1-9]|0) L([+-][1-9]|0) M([+-][1-9]|0) I([+-][1-9]|0) Θ([+-][1-9]|0) N([+-][1-9]|0) J([+-][1-9]|0)$
 
-Examples of correspondance between dimensional units and their dimensional units are:
+The physical dimensionality of all subclasses of SIDimensionalUnit are defined by their dimensional string. Examples of correspondance between dimensional units and their dimensional string are:
 
 - AmountOfSubstanceUnit <=> \"T0 L0 M0 I0 Θ0 N+1 J0\"
 - TimeUnit <=> \"T+1 L0 M0 I0 Θ0 N0 J0\"