SINGH, G. P.; NAGPAL, A. K.; SAINI, N. Methane production in relation to productivity of livestock and environment: A review. The Indian Journal of Animal Sciences, Delhi, India, v. 75, n. 1, 2005. Disponível em: https://epubs.icar.org.in/index.php/IJAnS/article/view/9674. Acesso em: 26 sep. 2023.