Nawaf, A. J., & Mohammad, A. S. (2021). Some Topological and Polynomial Indices (Hosoya and Schultz) for the Intersection Graph of the Subgroup of〖 Z〗_(r^n ). Ibn AL-Haitham Journal For Pure and Applied Sciences, 34(4), 68-77. https://doi.org/10.30526/34.4.2704