1. Pesticides Commission, DFG, Manual of Pesticide Residue Analysis, ed. H. P.Thiers and H. Zeumer, VCH, Weinheim, 1987, vol. 1, p. 37
2. Pesticides Commission, DFG, Manual of Pesticide Residue Analysis, ed. H. P. Thiers and J. Kirchoff, VCH, Weinheim, 1992, vol. 2
3. Food and Drug Administration, Pesticide Analytical Manual, ed. B. McMahon and N. F. Hardin, 3rd edn., 1994
4. Inspectorate for Health Protection, Analytical methods for pesticide residues in foodstuffs, ed. P. Van Zoonen, Rijswijk, The Netherlands, 6th edn., 1996
5. The hierarchy and relationships of analytical properties