DvornykA. V., StrukO. O., and TkachenkoV. I. 2018. “Almost Periodic Solutions of Lotka – Volterra systems With Diffusion and Impulsive Action”. Ukrains’kyi Matematychnyi Zhurnal 70 (2), 177-92. http://umj.imath.kiev.ua/index.php/umj/article/view/1549.