Dushka, V. A., & Cherniga, R. M. (2004). Diffusive Lotka-Volterra System: Lie Symmetries and Exact and Numerical Solutions. Ukrains’kyi Matematychnyi Zhurnal, 56(10), 1395-1404. Retrieved from https://umj.imath.kiev.ua/index.php/umj/article/view/3852