1. Aldrich D.T.A. 1974 Assessing varietal performance Occ. Symp. 6. Br. Grassld Soc 2 9
2. Reaction of Italian ryegrass cultivars under grazing as compared with cutting;Camlin;Journal of the British Grassland Society,1975
3. Perennial ryegrass-recommended varieties;Camun;Agriculture in Northern Ireland,1973
4. The influence of age of sward on the production of herbage;Williams;Soils Fertil,1972