array(3) {
  [0]=>
  int(4338)
  [1]=>
  string(88) "Sedgewick R. Algorithms in C++. Parts 1-4. - Addison-Wesley Professional, 1998. - 752 p."
  [2]=>
  int(1)
}
<h1>DB Error 230: Duplicate entry '4338-1' for key 'citations.citations_submission_seq'</h1>