array(3) {
  [0]=>
  int(4321)
  [1]=>
  string(258) "Edmonds L. D., Barnes C. E., Scheick L. Z. An Introduction to Space Radiation Effects on Microelectronics. - JPL publication 00-06, 2000. - 83 p. http://snebulos.mit.edu/projects/reference/NASA-Generic/JPL-00-06.pdf (дата обращения: 05.12.2015)."
  [2]=>
  int(6)
}
<h1>DB Error 230: Duplicate entry '4321-6' for key 'citations.citations_submission_seq'</h1>