KLESTOV, N. L.; GAVRIS, G. G.; ANDRIEVSKA, O. L. Rare and threatened birds of the lower reaches of Sula river. Cherkasy University Bulletin: Biological Sciences Series, [S. l.], v. 329, n. 36, 2016. Disponível em: https://bio-ejournal.cdu.edu.ua/article/view/181. Acesso em: 16 may. 2026.