KATYEGA, P. M. J. . Performance of Ayrshires and Ayrshire x Zebu Crosses in Iringa Region. Tanzania Veterinary Journal, [S. l.], v. 4, n. 4, p. 50–53, 1982. Disponível em: https://tvj.sua.ac.tz/vet2/index.php/TVJ/article/view/293. Acesso em: 4 jun. 2026.