“The N-Wiener Polynomials of Straight Hexagonal Chains and Kt×Cr”. AL-Rafidain Journal of Computer Sciences and Mathematics 6, no. 3 (December 2, 2009): 129–139. Accessed June 25, 2026. https://csmj.uomosul.edu.iq/index.php/csmj/article/view/36456.