Added logic to match unlabelled abstract fields

site/solr.php

   $output['title'] = $title[1];
 
   // Search for the abstract in the content element and display it
-  preg_match('/Abstract.*\n(.*)\n/', $content, $abstract);
-  $output['abstract'] = $abstract[1];
+  if (preg_match('/Abstract.*\n(.*)\n/', $content, $abstract)){
+    $output['abstract'] = $abstract[1];
+  }
+  else {
+    preg_match('/\(.\) \\n\\n(.*)\\n/', $content, $abstract);
+    $output['abstract'] = $abstract[1];
+  }
 
   return $output;