1. European, Commission, Energy for the future: Renewable sources of energy. White Paper for a Community Strategy and Action Plan, Communication from the Commission FOR/086/97, Brussels, 1997
2. ECE/FAO, European Timber Trends and Prospects: into the 21st Century, Geneva Timber and Forest Study Papers, No. 11, ECE/TIM/SP/11, United Nations, Geneva, 1996a
3. Dielen, L.J.M. and Schopfhauser, W., Enhanced use of renewable energy sources in Europe: threat or opportunity? Background paper FOR/036/97. Forestry Commission CEPI, Brussels, 1997
4. ECE/FAO, European Forests and Timber: scenarios into the 21st Century. Geneva Timber and Forest Discussion Papers, No. 10, ECE/TIM/DP/10, United Nations, Geneva, 1996b
5. EUROSTAT, Intra- and extra EU trade. Statistical office of the European Communities, Luxembourg, 1995