1. Directorate-General XII, Commission of European Communities, Biofuels, application of biologically derived products as fuels or additives in combustion engines. Report no. EUR 15647 EN, 1994
2. Hall, D. O., Rosillo-Calle, F., Williams, R. H. and Woods, J., Biomass for energy: supply prospects. In Renewable Energy, Source for Fuels and Electricity. Island Press, Washington DC, 1993
3. Hall, D. O., et al., Biomass for energy and industry. In Proceedings of the 7th European Conference on Biomass for Energy and Environment, Agriculture and Industry, 5–9 October 1992, Florence, Italy. Ponte Press, Bochum, Germany, 1994
4. Lysen, E. H., Daey Ouwens, C., van Onna, M. J. G., Blok, K., Okken, P. A. and Goudriaan, J., The feasibility of biomass production for the Netherlands energy economy. Rapport nr. 71.140/0130, Nederlandse maatschappij voor energie en milieu (NOVEM), Utrecht, 1992
5. Gosse, G. and Mauguin, P., Land availability and land use for energy crops in the EU: a global approach. Draft report of Working Group 7 of Concerted Action AIR3-94-2455, Environmental aspects of biomass production and routes for European energy supply, INRA, ADEME, Thiverval, Grignon, France, October 1996