1. Bussard, T., Tacher, L., Parriaux, A., & Maître, V. (2006). Methodology for delineating groundwater protection areas against persistent contaminants. Quarterly Journal of Engineering Geology & Hydrogeology, 39(1), 97–109.
2. Cooter, R., Ulen, T., (2016). Law and economics. Berkeley law books, Retrieved 31 June 2019 from http://scholarship.law.berkeley.edu/books/2.
3. Council Directive 91/676/EEC of 12 December 1991 concerning the protection of waters against pollution caused by nitrates from agricultural sources [1991] 31991L0676.
4. Council Directive 91/692/EEC of 23 December 1991 standardizing and rationalizing reports on the implementation of certain Directives relating to the environment [1991] 31991L0692; Council Directive 92/43/EEC of 21 May 1992 on the conservation of natural habitats and of wild fauna and flora [1992] 31992L0043; Directive 2012/18/EU of the European Parliament and of the Council of 4 July 2012 on the control of major-accident hazards involving dangerous substances, amending and subsequently repealing; Council Directive 96/82/EC Text with EEA relevance[2012] 32012L0018.
5. Directive 2000/60/EC of the European Parliament and of the Council of 23 October 2000 establishing a framework for Community action in the field of water policy [2000] OJ L327/1 (WFD).