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Zagorodnii , A. G.; Samoilenko , A. M.; Bugrov, V. A.; Mel’nyk, V. P.; Zgurovs’kyi , M. Z.; Stricha , M. V.; Virchenko , N. O. On the 100th Birthday of Outstanding Scientist Ostap Stepanovych Parasyuk (20.12.1921 – 22.11.2007). Ukr. Mat. Zhurn. 2022, 74, 286 - 288.