YERMOLAIEV, V. N. Concepts of state formation of the era national liberation competition (1917–1920). Problems of Legality, [S. l.], n. 154, p. 37–50, 2021. DOI: 10.21564/2414-990X.154.233717. Disponível em: http://plaw.nlu.edu.ua/article/view/233717. Acesso em: 19 jan. 2022.