diff --git a/_bibliography/convert.py b/_bibliography/convert.py
index 8fd5cf09b4ae..0ba748e31236 100644
--- a/_bibliography/convert.py
+++ b/_bibliography/convert.py
@@ -8,7 +8,7 @@ def add_field_if_author_in_entry(bibtex_path, pis):
         bib_database = bibtexparser.load(bibtex_file)
     for entry in bib_database.entries:
         if 'author' in entry:
-            entry["abbr"] = ", ".join(
+            entry["abbr"] = " x ".join(
                 [pi_label for pi, pi_label in pis.items() if pi in entry['author']])
 
     writer = BibTexWriter()
diff --git a/_bibliography/papers.bib b/_bibliography/papers.bib
index fe74f7da90eb..ad190f28ed47 100644
--- a/_bibliography/papers.bib
+++ b/_bibliography/papers.bib
@@ -1405,7 +1405,7 @@ @ed.ac.uk
 }
 
 @article{WOS:000365766500020,
- abbr = {NOLAN, SÜRMELI},
+ abbr = {NOLAN x SÜRMELI},
  abstract = {Deep layers of the medial entorhinal cortex are considered to relay
 signals from the hippocampus to other brain structures, but pathways for
 routing of signals to and from the deep layers are not well established.
@@ -1524,7 +1524,7 @@ @ed.ac.uk
 }
 
 @article{WOS:000388572700024,
- abbr = {NOLAN, SÜRMELI},
+ abbr = {NOLAN x SÜRMELI},
  address = {600 TECHNOLOGY SQUARE, 5TH FLOOR, CAMBRIDGE, MA 02139 USA},
  author = {Surmeli, Gulsen and Marcu, Daniel Cosmin and McClure, Christina and
 Garden, Derek L. F. and Pastoll, Hugh and Nolan, Matthew F.},
@@ -2415,7 +2415,7 @@ @ed.ac.uk
 }
 
 @article{WOS:000711952200005,
- abbr = {NOLAN, SÜRMELI},
+ abbr = {NOLAN x SÜRMELI},
  abstract = {The deep layers of the entorhinal cortex are important for spatial
 cognition, as well as memory storage, consolidation and retrieval. A
 long-standing hypothesis is that deep-layer neurons relay spatial and
diff --git a/_layouts/bib.liquid b/_layouts/bib.liquid
index f9a9f348356a..72df52f1ee63 100644
--- a/_layouts/bib.liquid
+++ b/_layouts/bib.liquid
@@ -2,15 +2,7 @@
 ---
 <div class="row">
   {% if site.enable_publication_thumbnails %}
-    <div class="col-sm-2 {% if entry.preview %}preview{% else %}
-        {% if entry.abbr is iterable %}
-            {% for abbr in entry.abbr %}
-                {{ abbr }}<br>
-            {% endfor %}
-        {% else %}
-            {{ entry.abbr }}
-        {% endif %}
-      {% endif %}">
+    <div class="col-sm-2 {% if entry.preview %}preview{% else %}abbr{% endif %}">
       {% if entry.preview %}
         {% if entry.preview contains '://' %}
           <img class="preview z-depth-1 rounded" src="{{ entry.preview }}">