1. Ogur EO (2013) Design of a biogas generator. J Eng Res Appl 3(6):630–635
2. Reith JH, Wijffels RH, Barten H (2003) Bio-methane and bio-hydrogen: status and perspectives of biological methane and hydrogen production. Dutch Biological Hydrogen Foundation – NOVEM, The Hague (ISSN: 9090171657)
3. Drapcho CM, Nhuan NP, Walker TH (2008) Biofuels engineering process technology. McGraw Hill, New York. ISBN 978-007-148-749-8
4. Juanka J, Kuruparan P, Visvanathan C. Optimizing combined anaerobic digestion process of organic fraction of municipal solid waste (MSW)
5. Soupios PM, Vallianatos FC, Papadopoulos ITh, Makris JP, Marinakis D (2005) Surface-geophysical investigation of a landfill in Chania, Crete. In: GEOENV2005, Proceedings of the international workshop in geoenvironment and geotechnics, pp 149–156