array(3) {
  [0]=>
  int(17921)
  [1]=>
  string(332) "Dinh K.L., Do T.B., Moldovyan N.A., Petrenko A.S. Typical Algebraic Signature Schemes with Two Hidden Groups / In: Dang, T.K., Kung, J., Chung, T.M. (eds) / Future Data and Security Engineering. FDSE 2025 // Communications in Computer and Information Science. Springer. 2026. vol 2709. pp. 83–99. DOI: 10.1007/978-981-95-4724-1_7."
  [2]=>
  int(26)
}
<h1>DB Error 230: Duplicate entry '17921-26' for key 'citations.citations_submission_seq'</h1>