1. Sustainable Industrial Development Sharing Responsibilities in a Competitive World, conference paper, The Hague, 1996.
2. Milieu, Ruimte en Wonen (Environment, Space and Housing), Ministry of Housing, Physical Planning and Environment, The Hague, 1995.
3. Business Council for Sustainable Development, Getting Eco-efficient, report of the First Antwerp Eco-Efficiency Workshop November 1993, Geneva, 1993.
4. , and , “Technologie en Integraal Ketenbeheer (Technology and Integrated Chain Management),” Raad voor het Milieu-en Natuuronderzoek (RMNO) (Rijswijk), no. 104 (1995).
5. “The Integration of Environmental Issues into Product Design Strategies,” in: The 1996 Business Strategy and the Environment Conference Proceedings, September 19th–20th, University of Leeds, UK, 1996, 59–63.