KARAMFILOV, Svetoslav. Study on the calving ease of cows from the Aberdeen Angus and the Limousin cattle breed reared in Вulgaria. Bulgarian Journal of Animal Husbandry, [S. l.], v. 57, n. 3, p. 10–22, 2020. Disponível em: https://agriacad.eu/ojs/index.php/bjah/article/view/177.. Acesso em: 16 oct. 2026.