1. CEC, 1991. EC Directive 91/414, concerning the placing of plant protection products on the market (Authorisations Directive). Commission of the European Communities, Directorate-General for Agriculture, DG VI B II-1, Brussels, Belgium.
2. CEC, 1995. EC Directive 95/36, establishing the Data Requirements for environmental fate and behaviour in Annex II (chapter 7) and Annex III (chapter 9) of Directive 91/414. Commission of the European Communities, Directorate-General for Agriculture, DG VI B II-1, Brussels, Belgium.
3. CEC, 1997a. EC Directive 97/57, establishing Annex VI (Uniform Principles) to Directive 91/414. Commission of the European Communities, Directorate-General for Agriculture, DG VI B II-1, Brussels, Belgium.
4. CEC, 1997b. EC Draft Guidance Document 9188/VI/97, Persistence in soil. Commission of the European Communities, Directorate-General for Agriculture, DG VI B II-1, Brussels, Belgium.
5. CEC, 1998. EC Draft Guidance Document 2021/VI/98, Terrestrial Ecotoxicology. Commission of the European Communities, Directorate-General for Agriculture, DG VI B II-1, Brussels, Belgium.