Cherniga, R. M. “New Exact Solutions of One Nonlinear Equation in Mathematical Biology and Their Properties”. Ukrains’kyi Matematychnyi Zhurnal 53, no. 10 (October 25, 2001): 1409-1421. Accessed May 13, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/4359.