El-Hadidy, Mohamed Abd Allah, and R. Alraddadi. “On Bivariate Distributions With \(N\) Deleted Areas: Mathematical Definition”. Communications in Mathematics and Applications 15, no. 3 (November 30, 2024): 1181–1190. Accessed August 18, 2025. https://www.journals.rgnpublications.com/index.php/cma/article/view/2834.