Ali, Ashaq, Gao, Wei, Ahmad, Haseeb, and Nazeer, Waqas. “Hosoya and Harary Polynomials of Zigzag and Triangular Benzenoid Systems”. Utilitas Mathematica, vol. 117, Sept. 2022, https://utilitasmathematica.com/index.php/Index/article/view/1455.