“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, no. 4 (October 20, 2021): 68–77. Accessed May 4, 2024. https://jih.uobaghdad.edu.iq/index.php/j/article/view/2704.