1. National Environmental Policy Plan (NEPP), Dutch Parliament, Lower house, year 1988–1989, 21137. nrs. 1–2
2. National Environmental Policy Plan Plus (NEPP+), Dutch Parliament, Lower house, year 1989–1990, 21137. nr. 20
3. Paper on prevention and re-use of waste, Dutch Parliament, Lower house, year 1988–1989, 20877, nr. 2
4. Dutch Parliament, Lower House, year 1979–1980, 15800, nr. 21, chapter XVII.
5. RIVM: National environmental forecast 2. (1990–2000), Samson H. D. Tjeenk Willink, Alphen aan den Rijn, 1991, pp. 357–358