LANG, David M. Georgien im Jahre 1840: Die Lister-Tagebiicher. Georgica, [S. l.], v. 12, p. 46–49, 1989. Disponível em: https://georgica.journals.humanities.tsu.ge/index.php/georgica/article/view/10204. Acesso em: 7 feb. 2026.