8European Commission Directorate- Generd for Energy (DGXVII). A thermie programme action. Combustion and gasification of agricultural biomass- technologies and applications[M]. 1995
9Food and Agriculture Organization of the United Na tions. FAO environment and energy paper. The bri quetting of agricultural wastes for fuel[M].1991
10Center for Biomass Technology. Doanish bioenergy solutions- reliable and efficiency[M].2002