M. KAMARNABISHA, K. THIRUSANGU, and E. ESAKKIAMMAL. “DEGREE FACTORIAL ENERGY OF HYDROCARBON GRAPHS AND BENZENOID SYSTEM”. Utilitas Mathematica 122, no. 1 (August 3, 2025): 2809–2828. Accessed July 27, 2026. https://utilitasmathematica.com/index.php/Index/article/view/2588.