Do, Tuan Minh, and Hoa Dinh Vu. “Necessary and Sufficient Conditions for Quasi-Strongly Regularity of Graph Product”. Journal of Computer Science and Cybernetics 34, no. 2 (October 3, 2018): 161–169. Accessed May 3, 2024. https://vjs.ac.vn/index.php/jcc/article/view/12489.