1. Energy and Protein Requirements of Ruminants. An Advisory Manual Prepared by the AFRC Technical Committee on Responses to Nutrients,1993
2. The continuum between preferences and aversions for flavoured foods associated with increasing adminstration of casein doses;Arsenos,1998
3. Official Methods of Analysis,1990
4. Bartram, C. G. 1987. The endogenous protein content of ruminant proximal duodenal digesta. Ph.D. Diss., Univ. Nottingham, United Kingdom.
5. Performance specifications for infra-red milk analysis;Biggs;J. AOAC,1979