Akra, Ukeme P., Efiong A. Adakama, Anthony A. Isaac, and Stephen S. Akpan. “Group – Theoretic Analysis in Balanced Incomplete Block Design Structures”. Researchers Journal of Science and Technology 6, no. 5 (July 4, 2026): 68–76. Accessed July 5, 2026. https://rejost.com.ng/index.php/home/article/view/306.