-, .-. Обратись в НЕБО!. проект байкал, Irkutsk, Russian Federation, v. 4, n. 11, p. 20–20, 2007. DOI: 10.7480/projectbaikal.11.547. Disponível em: https://projectbaikal.com/index.php/pb/article/view/547. Acesso em: 3 май. 2024.