array(3) {
  [0]=>
  int(4247)
  [1]=>
  string(167) "Ayman A., El-Shafei Z., Ahmed H., Farhan S. An Antilock-Braking Systems (ABS) Control: A Technical Review // Intelligent Control and Automation. 2011. N 2. P. 186-195."
  [2]=>
  int(1)
}
<h1>DB Error 230: Duplicate entry '4247-1' for key 'citations.citations_submission_seq'</h1>