array(3) {
  [0]=>
  int(15323)
  [1]=>
  string(145) "Wang, Zhihao, et al. “Towards IP Geolocation with Intermediate Routers Based on Topology Discovery.” Cybersecurity, vol. 2, no. 1, Apr. 2019."
  [2]=>
  int(1)
}
<h1>DB Error 230: Duplicate entry '15323-1' for key 'citations.citations_submission_seq'</h1>