Kaluri, Sowndarya Suseela Padma, and Y Lakshmi Naidu. “Queens Independence Separation on Rectangular Chessboards”. Journal of the Indonesian Mathematical Society 27, no. 2 (July 16, 2021): 158–169. Accessed October 5, 2024. http://jims-a.org./index.php/jimsa/article/view/986.