TARNAWSKY, M. Serhii Yefremov: Epitome of the Ukrainian Revolution. Kyiv-Mohyla Humanities Journal, [S. l.], n. 4, p. 1–10, 2017. DOI: 10.18523/kmhj106677.2017-4.1-10. Disponível em: http://kmhj.ukma.edu.ua/article/view/106677. Acesso em: 23 feb. 2025.