K S P. Sowndarya, and Y. Lakshmi Naidu. “Perfect Domination Separation on Square Chessboard”.
Malaya Journal of Matematik
8, no. 04 (October 1, 2020): 1497–1501. Accessed April 5, 2025. https://www.malayajournal.org/index.php/mjm/article/view/1657.