ЛЕДАЩЕВ, С. Статья, вып. 2 (2015), с. 84-86. Scientific Notes. Vladimir Branch, [S. l.], v. 4, n. 2, p. 84–86, 2015. Disponível em: https://vladimir-uz.owebs.ru/article/view/15725. Acesso em: 8 nov. 2026.