KLIMOW, Georgij A. Zur Etymologie von georg. usx- »Opferstier, Kalb«. Georgica, [S. l.], v. 15, p. 99–103, 1992. Disponível em: https://georgica.journals.humanities.tsu.ge/index.php/georgica/article/view/10295. Acesso em: 11 aug. 2026.