Dvornyk, A. V., Struk, O. O., & Tkachenko, V. I. (2018). Almost periodic solutions of Lotka – Volterra systems with diffusion and impulsive action. Ukrains’kyi Matematychnyi Zhurnal, 70(2), 177-192. Retrieved from https://umj.imath.kiev.ua/index.php/umj/article/view/1549