array(3) {
  [0]=>
  int(3030)
  [1]=>
  string(189) "Wang Y., Hu X. Fuzzy reasoning of accident provenance in pervasive healthcare monitoring systems // IEEE Journal of Biomedical and Health Informatics. 2013. vol. 17. no. 6. pp. 1015–1022."
  [2]=>
  int(12)
}
<h1>DB Error 230: Duplicate entry '3030-12' for key 'citations.citations_submission_seq'</h1>