Abdullayev, F. G., Savchuk, V. V., Samoilenko, A. M., & Serdyuk, A. S. (2018). International conference on the mathematical analysis, differential equations, and their applications (MADEA-8) devoted to the 80th birthday of Academician A. M. Samoilenko. Ukrains’kyi Matematychnyi Zhurnal, 70(10), 1439-1440. Retrieved from https://umj.imath.kiev.ua/index.php/umj/article/view/1647