Li, Yue, Qingcuo Ren, Jinxia Liang, Chengxu Yang, and Qinghe Tong. 2022. “SOMBOR INDEX OF LINE AND TOTAL GRAPHS AND PERICONDENSED BENZENOID HYDROCARBONS”. International Journal of Research -GRANTHAALAYAH 10 (8):99-111. https://doi.org/10.29121/granthaalayah.v10.i8.2022.4730.