1. The economics of European Integration;Molle,1991
2. The value of non-market natural assets as production factor;Point,1994
3. Economics of the Public Sector;Stiglitz,1988
4. Opbrengstderving en economische schade door luchtverontreiniging in de gewasteelt in Nederland (Crop loss due to air pollution in the Netherlands);Tonneijck,1998
5. Critical levels for the effects of nitrogen containing air pollutants on vegetation;Van der Eerden,1997