ATREY, R K; SINGH, Harpal; SHARMA, R K. Factors affecting the productive herd life, longevity and lifetime calf production traits in Frieswal cattle. The Indian Journal of Animal Sciences, Delhi, India, v. 75, n. 10, 2005. Disponível em: https://epubs.icar.org.in/index.php/IJAnS/article/view/8283. Acesso em: 23 oct. 2025.