Lī, Dong Hua, Beob Gyun Kim, and Sang Rak Lee. “A Respiration-Metabolism Chamber System for Measuring Gas Emission and Nutrient Digestibility in Small Ruminant Animals”. Revista Colombiana de Ciencias Pecuarias 23, no. 4 (December 27, 2010): 444–450. Accessed January 21, 2025. https://revistas.udea.edu.co/index.php/rccp/article/view/324608.