4Gross R, Leach M, Bauen A. Progress in renewable energy[J]. Environment International, 2003,29 (1): 105-122.
5Yokoyama S Y, Ogi T, Nalampoon A, et al. Biomass energy potential in Thailand[J]. Biomass and Bioenergy,2000,18(5) :405-410.
6Cook J, Beyea J. Bioenergy in the United States:progress and possibilities [J]. Biomass and Bioenergy,2000,18(6) : 441.
7Steininger K W, Voraberger H. Exploiting the medium term biomass energy potentials in Austria [J].Environmental and Resource-Economics, 2003,24 (4): 359-377.
8Dai Lin. The development and prospective of bioenergy technology in China[J]. Biomass and Bioenergy, 1998,15(2):181-186.
9Demirbas A, Energy balance, energy sources, energy policy, future developments and energy investments in Turkey[J]. Energy Conversion and Management. 2001,42 (10): 1239- 1258.
