array(3) {
  [0]=>
  int(13699)
  [1]=>
  string(268) "Konishchev K.B., Semenov A.M., Chaban A.S., Lobanova N.A., Kashkovskii R.V. Mechanism features of corrosion cracking under stress for pipe metal in environments containing hydrogen sulfide and carbon dioxide. Vesti gazovoi nauki. 2019. N 3 (40), p. 60-66 (in Russian)."
  [2]=>
  int(1)
}
<h1>DB Error 230: Duplicate entry '13699-1' for key 'citations.citations_submission_seq'</h1>