Isabu, Hillary Amonyela, and Michael Onyango Ojiema. “On Some Aspects of Compactness in Metric Spaces”. African Scientific Annual Review 1, no. Mathematics 1 (April 17, 2024): 18–27. Accessed April 20, 2026. https://asarev.net/ojs/index.php/asarev/article/view/2.