fix

layouts/partials/publications/publication.html

@@ -7,7 +7,7 @@
   </p>
   <p class="publication-meta">
     {{ with .Params.ref }}
-      <span class="publication-ref">{{ partial "PrepareHTML" . }}</span>
+      <span>{{ partial "PrepareHTML" . }}</span>
     {{ end }}
     <span class="publication-date">{{ .Date.Format "2006" }}</span>
     {{ with .Params.authors_list }}