Vladyslav Kyrylovych Dzyadyk (on his 100th birthday) - A. M. Samoilenko; V. K. Zadiraka; O. A. Letychevskyi; I. O. Lukovskyi; V. L. Makarov; A. P. Holub; Yu. V. Dziadyk; V. V. Kovtunets; A. S. Romaniuk; A. S. Serdiuk (Ukrainian Mathematical Journal, 2019)