2) The International Ash Working Group: An international perspective on characterization and management of residues from municipal solid waste incineration, Final Document, Chapter 15 (1995)
3) van der Sloot, H. A., Piepers, O., Kok, A.: A standard leaching test for combustion residues, Studiegroep Ontwikkeling Standard Uitloogtesten Verbrandingsresiduen, BEOP-31 (1984)
4) Leaching characteristics of building and solid waste materials-Leaching tests-Determination of the availability of inorganic components for leaching, Draft NEN 7341, 7343, 7345 (1993)