[120] REC, 2001: Waste Management Policies in Central and Eastern European Countries: Current Policies and Trends, Budapest: Centre régional pour l'environnement de l'Europe centrale et orientale, p. 38.
[120] REC, 2001: Waste Management Policies in Central and Eastern European Countries: Current Policies and Trends, Boedapest: The Regional Environmental Centre for Central and Eastern Europe, blz. 38.