1. Begouen, O., Thiebaut, E., Pavia, A., and Peillex, J.P. (1988). Thermophilic Anaerobic Digestion of Municipal Solid Waste by the Valorga Process. In:Proceedings of the Fifth International Symposium on Anaerobic Digestion, May 22?26, Bologna, Italy, pp. 789?792.
2. de Baere, L. and Verstraete, W. (1984). High-Rate Anaerobic Composting with Biogas Recovery.Biocycle 25, 30?31.
3. Gaddy, J.L. and Clausen, E.C. (1985).SERI Anaerobic Digestion Program 1984 Annual Report. SERI/PR-231-2691.
4. Ghosh, S. (1985). Leach-bed Two-phase Digestion?The LanFilgas Concept. In:Proceedings of the Ninth Annual Symposium on Energy From Biomass and Wastes, Jan. 28?1 Feb., Lake Buena Vista, FL. pp. 743-761.
5. Goebel, R.P. (1983). High Solids Anaerobic Digester for Rural Use.US DOE Technical Report. #DE-FG03-81 SF 11613.