M. Ali, A., أحمد, T. H. Ismail, and طاهر. “Hosoya Polynomials of The Width Distance of Some Cog-Special Graphs”. AL-Rafidain Journal of Computer Sciences and Mathematics, vol. 8, no. 2, June 2025, pp. 123-37, https://rjps.uomosul.edu.iq/index.php/csmj/article/view/19602.