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2. Ministry of Environment and Energy, Statutory Order no. 655, On Recycling of Residual Products and Soil in Building and Construction Works, Copenhagen, Denmark, 2000.
3. Impact of Residues on Groundwater and Drinking Water, Environmental Project No. 467;Rasmussen,1999
4. Municipal Solid Waste Incinerator Residues. Studies in Environmental Science, vol. 67;Chandler,1997
5. CEC, Council Decision 2003/33/EC of 19 December 2002 establishing criteria and procedures for the acceptance of waste at landfills pursuant to Article 16 and Annex II to Directive 1999/31/EC, 2003.