BURAVA, O. Балленберг. проект байкал, Irkutsk, Russian Federation, v. 1, n. 3, p. 63–64, 2004. DOI: 10.7480/projectbaikal.3.188. Disponível em: https://projectbaikal.com/index.php/pb/article/view/188. Acesso em: 4 май. 2024.