1. Problems of interpreting arthropod sampling with pitfall traps;Adis;Zool. Anz. Jena,1979
2. Aebischer, N.J., 1991. Twenty years of monitoring invertebrates and weeds in cereal fields in Sussex. In: Firbank, L.G., Carter, N., Darbyshire, J.F., Potts, G.R. (Eds.), The Ecology of Temperate Cereal Fields. Blackwell Scientific Publications, Oxford, pp. 305–331.
3. Alabaster, J.S., Lloyd, R., 1980. Finely divided solids. In: Alabaster, J.S., Lloyd, R. (Eds.), Water Quality Criteria for Freshwater Fish. Butterworth, London, pp. 1–20.
4. The effects of organic and integrated farming on rare arable weeds on the Forschungsverbund Agrarokosysteme Munchen (FAM) research station in southern Bavaria;Albrecht;Biol. Conserv.,1998
5. ICI Plant protection Division experience with direct drilling systems, 1961–1974;Allen;Outl. Agric.,1975