DEMCHYSHAK , Ruslan, and Taras STARODUB. “PLACE OF UKRAINE IN THE SECURITY SYSTEM OF THE REGION OF CENTRAL AND EASTERN EUROPE IN THE UKRAINIAN NATIONALISM THEORISTS’ WORKS (the 20–30s of the XXth Century)”. EAST EUROPEAN HISTORICAL BULLETIN, no. 20 (September 30, 2021). Accessed November 14, 2024. http://eehb.dspu.edu.ua/article/view/240016.