1. Baker, A. M. C. 1980. A study of herbage production and its utilisation by dairy cattle from continuously grazed swards. MS thesis. University of Glasgow, UK.
2. Milk response to concentrate supplementation of high-producing dairy cows grazing at two pasture allowances;Bargo;J. Dairy Sci.,2002
3. Berry, D. P., L. Shalloo, A. R. Cromie, R. F. Veerkamp, P. Dillon, P. R. Am, J. F. Kearney, R. D. Evans, and B. Wickham. 2007. The economic breeding index: A generation on. Technical report to the Irish Cattle Breeding Federation.
4. Effect of altering the length of regrowth interval in early, mid and late season on the productivity of grass swards;Binnie;J. Agric. Sci. (Camb.),1997
5. The Influence of sward condition on rates of herbage growth and senescence in mixed swards under continuous stocking management;Bircham;Grass Forage Sci.,1983