array(3) {
  [0]=>
  int(3016)
  [1]=>
  string(125) "Ronzhin A., Karpov A. Russian Voice Interface // Pattern Recognition and Image Analysis. 2007. vol. 17. no. 2. pp. 321–336."
  [2]=>
  int(22)
}
<h1>DB Error 230: Duplicate entry '3016-22' for key 'citations.citations_submission_seq'</h1>