1. Blok, K., 2004. Improving energy-efficiency by 5% and more per year? Journal of Industrial Ecology, accepted for publication.
2. CEC, 2003. ‘Directive 2002/91/EC of the European Parliament and of the council of 16 December 2002 on the energy performance of buildings’. Official Journal of the European Communities 4 (1) L1/65–71.
3. Elliot, N., Nadel, S., 2003. Realizing Energy-Efficiency Opportunities in Industrial Fan and Pump Systems. American Council for an Energy-Efficient Economy, Washington, DC.
4. EnergieNed, 2002. Basisonderzoek Elektriciteitsverbruik Kleinverbruikers BEK 1999. EnergieNed, Arnhem, The Netherlands.
5. Low Carbon Electricity Systems—Methodology & Results for the EU;Harmelink,2003