Nikitenko, Kostiantyn, AND But, Oleksandr. " Innovative Experience of the NEP: lessons for the present" 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 4 Number 2 (18 July 2022)