1. Arrow, K.J., 1951. Social Choice and Individual Welfare. Wiley, New York.
2. Baldoch, D., Lowe, D., 1996. The development of European agro-environment policy. In: Whitby, M. (Ed.), The European Environment and CAP Reform Policies and Prospects for Conservation. CAB International, Wallingford, pp. 8–25.
3. Bardecki, M.-J., 1984. Wetland conservation policies in southern Ontario—a Delphi approach. Geographical Monographs 16. York University.
4. Bortz, J., Lienert, G.A., Boehnke, K., 1990. Verteilungsfreie Methoden in der Biostatistik. Springer, Berlin.
5. Council Regulation, 1992. Council Regulation (EEC) 2078/92 of June 30, 1992 on agricultural production methods compatible with the requirements of the protection of the environment and the maintenance of the countryside. Off. J. Eur. Communities L215, 85–90.