1. Biogas Handbook;Al Seadi,2008
2. Standard Methods for the Examination of Water and Wastewater;APHA,2005
3. Archer, D.B., Kirsop, B.H., 1990. The microbiology and control of anaerobic digestion. In: Wheatley, A. (Ed.), Anaerobic Digestion: A Waste Treatment Technology. Crit. Rep. Appl. Chem. 31, 43-91.
4. Anaerobic digestion of lipid-rich waste—effects of lipid concentration;Cirne;Renew. Energy,2007
5. Mitigation of greenhouse gas emissions by anaerobic digestion of cattle slurry;Clemens;Agr. Ecosyst. Environ.,2006