P. O, Ochi, Udonsa Aniefiok Ezekiel, Jeremiah Timothy, Agada A. A, Urum T.G, Ochi H. T, and Ifeoma. B, Nworah. “OPTIMAL CONTROL ANALYSIS OF SHIGELLA EPIDEMIC MODEL”. BW Academic Journal (June 18, 2023): 22. Accessed May 1, 2026. https://www.bwjournal.org/index.php/bsjournal/article/view/1341.