1. Standard methods for the examination of water and wastewater;American Public Health Association (APHA),1975
2. Methane production from a large-size on-farm digester for poultry manure;Converse,1981
3. Design criteria and operational guidelines for a pilot-scale anaerobic digester;Fischer;Resource Recovery and Conservation,1979
4. Anaerobic digestion of farm animal wastes;Gramms;Trans. of the ASAE,1971
5. Performance of a pilot-scale, thermophilic, anaerobic fermentor treating cattle waste;Hashimoto;Resource Conserv.,1982