1. Brett, C.T. and Waldron, K., Physiology and Biochemistry of Plant Cell Walls, London: Unwin Hyman, 1990, 194 p.
2. Van Soest, P.J., Nutritional Ecology of the Ruminant, 2nd ed., Ithaca, NY: Comstock Publishing Associates, 1994, 476 p.
3. Russell, J.B., Rumen Microbiology and Its Role in Ruminant Nutrition, New York: Ithaca, 2002, 119 p.
4. Clark, J.H., Klusmeyer, T.H., and Cameron, M.R., Microbial protein synthesis and flows of nitrogen fractions to the duodenum of dairy cows, J. of Dairy Science, 1992, vol. 75, pp. 2304–2323.
5. Wood, T.G. and Johnson, R.A., The Biology, physiology and ecology of termites, in Economic Impact and Control of Social Insects, Vinson, S.B., Ed., New York: Praeger Publications, 1986, pp. 1–68.