Ogundare, Babatunde Sunday, and James Akingbade. “Boundedness and Stability Properties of Solutions of Mathematical Model of Measles.”. Tamkang Journal of Mathematics 52, no. 1 (January 31, 2021): 91-112. Accessed April 14, 2021. https://journals.math.tku.edu.tw/index.php/TKJM/article/view/3367.