1. European Economic Community (EEC), European Hazardous Waste Catalogue (EHWC). DOCE no. L 356, Brussels, 1994, p. 14.
2. European Economic Community (EEC), Council project of Regulation on the management of wastes statistics. COM (99) 31 final-99/0010 (CNS) (1999/C87/02), Brussels, 1999, pp. 22–96.
3. European Economic Community (EEC), Council Directive on the Landfill of Wastes. DOCE No. L 182, Brussels, 1999, p. 1.
4. Ibañez R., Contribution to industrial wastes characterization. PhD thesis, University of Cantabria, Santander, Spain, 1996.