1. US Environmental Protection Agency, Agricultural Chemicals in Groundwater: Proposed Pesticide Strategy, US EPA, Washington, DC, 1987, pp. 1–150.
2. C. D. Watts , L.Clark, S.Hennings, K.Moore, and C.Parker, in Pesticides: Analytical Requirements for Compliance With EC Directives, Water Pollution Research Report 11, eds. Crathorne, B., and Augeletti, G., Commission of the European Communities, Brussels, Belgium, 1989, pp. 16–34.
3. G. Premazzi , Evaluation of the Impact of Malathion on the Aquatic Environment, Commission of the European Communities, Joint Research Center, Ispra, Italy, 1983, pp. 1–67.
4. Atrazine and other s-triazine herbicides in lakes and in rain in Switzerland