Saheli, Mahboubeh, and Ali Reza Ashrafi. “The Eccentric Connectivity Index of Armchair Polyhex Nanotubes”. Macedonian Journal of Chemistry and Chemical Engineering 29, no. 1 (June 15, 2010): 71–75. Accessed November 21, 2024. https://mjcce.org.mk/index.php/MJCCE/article/view/175.