Турчин, Я.Б. 2015. “THE KYIV PERIOD OF LIFE OF O.EIHELMANN: THE FORMATION AND DEVELOPMENT OF SOCIAL AND POLITICAL POSITIONS”. The Journal of V.N. Karazin Kharkiv National University. Issues of Political Science 16 (885), 42-50. https://periodicals.karazin.ua/politology/article/view/3247.