array(3) {
  [0]=>
  int(3429)
  [1]=>
  string(195) "Hinton G. et al. Deep neural networks for acoustic modeling in speech recognition: The shared views of four research groups // IEEE Signal Pro-cessing Magazine. 2012. vol. 29. no. 6. pp. 82–97."
  [2]=>
  int(6)
}
<h1>DB Error 230: Duplicate entry '3429-6' for key 'citations.citations_submission_seq'</h1>