1. Adviesbureau Arnhem (1978) Hydrological research Broekpolder (in Dutch). Arnhem, NL
2. Adviesbureau Arnhem (1980) Ripening of dredged material in relation to flora elements (in Dutch). Arnhem, NL
3. CCRX (1983) Metingen van radioactiviteit en xenobiotische stoffen in het biologisch milieu in Nederland. VROM, Leidschendam, NL
4. Chaney RL (1983) Potential effects of sludge-borne heavy metals and toxic organics on soils, plants and animals, and related regulatory guidelines. Beltsville Agricultural Research Centre, Beltsville, USA
5. Combs SM, Dowdy RH, Gupta SC, Larson WE, Gast RG (1982) Chemical properties and miner-alogical characteristics of selected dredged materials. J Environ Qual 11:255–261