F. G. Abdullayev, V. V. Savchuk, A. M. Samoilenko, and A. S. Serdyuk, “International conference on the mathematical analysis, differential equations, and their applications (MADEA-8) devoted to the 80th birthday of Academician A. M. Samoilenko”, Ukr. Mat. Zhurn., vol. 70, no. 10, pp. 1439–1440, Oct. 2018, Accessed: Dec. 06, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/1647