array(3) {
  [0]=>
  int(15545)
  [1]=>
  string(176) "Dastile X., Celik T., Potsane M. Statistical and machine learning models in credit scoring: A systematic literature survey // Applied Soft Computing. 2020. vol. 91. pp. 106263."
  [2]=>
  int(1)
}
<h1>DB Error 230: Duplicate entry '15545-1' for key 'citations.citations_submission_seq'</h1>