Yakubu, Mohammed B., Hussaini DanAzumi, Mohammed Bulama, and Abba Hassan. “Intrusion Tolerance Model Against Higher Institution Database”. Global Journal of Information Technology: Emerging Technologies 9, no. 1 (April 30, 2019): 20–28. Accessed April 20, 2024. https://un-pub.eu/ojs/index.php/gjit/article/view/4060.