1. Aalbers, Th.G., de Wilde, P.G.M., Rood, G.A., Vermij, P.H.M., Saft, R.J., van de Beek, A.I.M., Broekman, M.H., Masereeuw, P., Kamphuis, Ch., Dekker, P.M., Valentijn, E.A., 1996. Environmental quality of primary and secondary construction materials in relation to re-use and protection of soil and surface water. RIVM-Report No. 771402007, National Institute of Public Health and the Environment, Bilthoven, The Netherlands.
2. Eskola, P., Mroueh, U.-M., Juvankoski, M., Ruotoistenmäki, A., 1999. Life-cycle assessment of road construction and earthworks, VTT Notes 1962, Technical Research Centre of Finland, Espoo, Finland (in Finnish with an English abstract).
3. European Commission, 2002. Council Decision of 19 December 2002 establishing criteria and procedures for the acceptance of waste at landfills pursuant to Article 16 of and Annex II to Directive 1999/31/EC. 2003/33/EC. Council of the European Union, Brussels, Belgium.
4. European Commission, 2003. Court of Justice of the European Communities. Decision C.114/01. Issued on 11 September, 2003. Council of the European Union, Brussels, Belgium.
5. European Commission, 2005. Proposal for a Directive of the European Parliament and of the Council of waste, 26 December, 2005. 2005/0281 (COD). Council of the European Union, Brussels, Belgium.