1. Behaviour of organic carbon, nitrogen and phosphorus in the Scheldt estuary;Wollast;Thalassia Jugosl.,1982
2. Aquatic Chemistry;Stumm,1981
3. Trace Element Speciation in Surface Waters and its Ecological Implications,1983
4. Complexation of Trace Metals in Natural Water,1984
5. Metals in the Hydrocycle;Salomons,1984