1. 1. Biogas Hand Book Authors Teodorita Al Seadi, Dominikrutz, Heinz Prassl, Michael Köttner, Tobias Finsterwalder, Silke Volk, Rainer Janssenuniversity Of Southern Denmark Esbjerg, Nielsbohrsvej 9- 10,DK-6700 Esbjerg, Denmark, 2008
   2. Chrish Kavuma (821231-A172) Variation of Methane and Carbon dioxide Yield in a biogas plant,Department ofEnergy TechnologyRoyal Institute of TechnologyStockholm, Sweden
   3. Fabien Monnet. An Introduction to Anaerobic Digestion of Organic Wastes, Final Report, Scotland November 2003
   4. Marchaim,U.(1992). Biogas Processes for Sustainable Development Rome: FAO Ag Services Bulletin. (Literature)
   5. T.Z.D. de Mes, A.J.M. Stams, J.H. Reith and G. Zeeman,Methane production by anaerobic digestion of wastewater and solid wastes
   6. Natural Resources Conservation Service, “Anaerobic digester controlled temperature”;2004Code366 http://efotg.sc.egov.usda.gov//references/public/CA/3 66std-9-04.pdf
   7. Biogas Plant Constructions M. Samer, Cairo University, Faculty of Agriculture, Department of Agricultural Engineering, Egypt
   8. Carl Nelson John Lamb,Final Report:Haubenschild Farms Anaerobic Digester
   9. Roediger, H. Die anaerobe alkalischeSchlammfaulung. Wasser-Abwasser, H.1, Verlag R. Oldenbourg, Muchen u. Wien. 1967.
   10. Jerome NdamMungwe Department of Energy Politecnico di Milano Milan, Italy; School of Engineering Catholic University of Cameroon Bamenda, Cameroon, Domestic Biogas Digesters in Developing Countries