1. NRC, Forestry Research: A Mandate for Change. National Research Council. National Academy Press, Washington, D.C. 84 pp. 1990
2. Hardwood energy crops: the technology of intensive culture;Ranney;J. For.,1987
3. Jeffries, T. W., Physical, chemical and biochemical considerations in the biological degradation of wood. In Wood and Cellulosics: Industrial Utilization, Biotechnology, Structure and Properties, eds J. F. Kennedy, G. O. Phillips and P. A. Williams, pp. 213–230. Ellis Howard Ltd., West Sussex, U.K. 1987
4. Klass, D. L., (ed.). Proc. Vols. I–III. First Biomass Conference of the Americas: Energy Environment, Agriculture, and Industry. Aug. 30–Sept. 2, 1993, Burlington, VT. National Renewable Energy Laboratory, Golden, CO. NREL/CP-200-5768 DE930010050. 1942 pp. 1993
5. Use of wood energy in the United States — an opportunity;Koning;Biomass,1987