Svitlenko, Serhii. " Revival and preservation of historical memory in the creative heritage of Professor M. P. Kovalskyi" Universum Historiae et Archeologiae = The Universe of History and Archeology = Універсум історії та археології = Универсум истории и археологии ISSN 2664-9950 (Print) ISSN 2707-6385 (Online) [Online], Volume 2 Number 1 (1 January 2020)