1. Partitioning losses of nitrogen fertilizer between leaching and de-nitrification;Addiscott;Journal of Agricultural Science, Cambridge,1992
2. Yield of wheat in the United Kingdom: recent advances and prospects;Austin;Crop Science,1999
3. The nitrogen economy of winter wheat;Austin;Journal of Agricultural Science, Cambridge,1977
4. Genetic improvements in winter wheat yields since 1900 and associated physiological changes;Austin;Journal of Agricultural Science, Cambridge,1980
5. Avery, B.W., Bullock, P., 1969. Morphology and classification of Broadbalk soils. In: Rothamsted Experimental Station, Report for 1968, Part 2. Chapter 5, the Soils of Broadbalk. Lawes Agricultural Trust, Harpenden, UK, pp. 63–81.