ASSAN, N. . Aspects of litter size (birth type) in goats and sheep production. Scientific Journal of Zoology, [S. l.], v. 9, n. 2, p. 138-151, 2020. Disponível em: http://www.sjournals.com/index.php/sjz/article/view/1510. Acesso em: 21 sep. 2021.