1. Miljø-og Energiministeriet, Bekendtgørelse om anvendelse af aske fra forgasning og for-brænding af biomasse og biomasseaffald til jordbrugsformål, BEK nr. 39 af 20/01/2000, January 2000 (in Danish).
2. Assessment and management of risks arising from exposure to cadmium in fertilisers (I);De Meeûs;Sci. Total Environ.,2002
3. Electrodialytic remediation of soil polluted with copper from wood preservation industry;Ottosen;Environ. Sci. Technol.,1997
4. A.J. Pedersen, L.M. Ottosen, A. Villumsen, Electrodialytic removal of heavy metals from MSWI fly ashes, in: Proceedings of The 17th International Conference on Solid Waste Technology and Management, Philadelphia, PA, USA, October 2001, pp. 329–339.
5. Evaluation of assisting agents for electrodialytic removal of Cd, Pb, Zn, Cu and Cr from MSWI fly ash;Pedersen;J. Hazard. Mater.,2002