1. Agricultural Research Council. 1965. The Nutrient Requirements of Farm Livestock No. 2, Ruminants: Technical Reviews and Summaries. London, H. M. S. O.
2. Studies on monozygous cattle twins. V. The effect of different planes of nutrition on growth and body development of dairy heifers;Bonnier;Acta Agr. Suecana,1946
3. Bioenergetics and Growth, Chap. 14;Brody,1945
4. Experiments on the nutrition of the dairy heifer. VII. Observations on the effect of the level of energy intake on the utilization of protein in growth and in lactation;Broster;J. Agr. Sci.,1969
5. Reference base, Wb, of growing steers determined by relating forage intake to body weight;Colburn;J. Dairy Sei.,1968