Dvornyk, A. V., O. O. Struk, and V. I. Tkachenko. “Almost Periodic Solutions of Lotka – Volterra systems With Diffusion and Impulsive Action”. Ukrains’kyi Matematychnyi Zhurnal 70, no. 2 (February 25, 2018): 177-192. Accessed March 29, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/1549.