Lī, D.H., Kim, B.G. and Lee, S.R. 2010. A respiration-metabolism chamber system for measuring gas emission and nutrient digestibility in small ruminant animals. Revista Colombiana de Ciencias Pecuarias. 23, 4 (Dec. 2010), 444–450. DOI:https://doi.org/10.17533/udea.rccp.324608.