1. Nutrient cycling in two Danish beech forests growing on different soil types;Astrup;Holarct. Ecol.,1979
2. Leaching of metals in the upper C horizons of spruce and beech forest soils;Bergkvist,1987
3. Soil solution chemistry and metal budgets of spruce forest ecosystems in Sweden;Bergkvist;Water Air Soil Pollut.,1987
4. Fluxes of protons, metals and anions in spruce, beech and birch forest ecosystems;Bergkvist,1986
5. Pattern and Process in a Forested Ecosystem;Bormann,1981