1. Environment and Nature Report for Flanders 1996;Dams,1996
2. Construction of a decision model for the preservation of soil fertility and vitality of forests on sandy soils;De Keersmaeker,1997
3. Nitrogen deposition and normation for forest and heather;Denneman;Landscape,1989
4. Final report 1997;De Schrijver,1997
5. Atmospheric deposition in forest edges measured by monitoring canopy throughfall;Draaijers;Water, Air and Soil Pollution,1988