array(3) {
  [0]=>
  int(1921)
  [1]=>
  string(161) "<em>Alasoud, A., Haarslev, V., Shiri, N.</em> An Effective Ontology Matching Technique. Proceedings of the 17th International Symposium ISMIS 2008, 2008, 585-590"
  [2]=>
  int(1)
}
<h1>DB Error 230: Duplicate entry '1921-1' for key 'citations.citations_submission_seq'</h1>