Moreira, Paulo Cesar, et al. “PRODUCTION OF VOLATILE FATTY ACIDS EVALUATED BY SEMIAUTOMATIC TECHNIQUE IN VITRO IN THE RUMINANT FEEDS WITH DIFFERENT CARBOHYDRATE SOURCES IN THE ROUGHAGES RATE”. Brazilian Animal Science Ciência Animal Brasileira, vol. 10, no. 2, July 2009, pp. 413-24, https://revistas.ufg.br/vet/article/view/1036.