Gholami, Ahmad, Ali Reza Ashrafi, and M. Ghorbani. “Symmetry of Benzenoid Chains”. Macedonian Journal of Chemistry and Chemical Engineering 25, no. 1 (June 15, 2006): 23–27. Accessed May 1, 2024. https://mjcce.org.mk/index.php/MJCCE/article/view/275.