Isaac, Anthony A., Ukeme P. Akra, Itoro M. Tim, and Ekemini U. George. β€œOn the Additional Existence Conditions for T-Steiner Quintuple Systems of Balanced Incomplete Block Designs ”. Researchers Journal of Science and Technology 6, no. 5 (July 8, 2026): 77–88. Accessed July 23, 2026. https://rejost.com.ng/index.php/home/article/view/307.