1. Isolation of hydrogenotrophic methanogenic archaea from a subtropical paddy field;Adachi;FEMS Microbiol. Ecol.,1999
2. Anunputtikul, W., Rodtong, S., 2004. Laboratory scale experiments for biogas production from Cassava Tubers, The Joint International Conference on “Sustainable Energy and Environment (SEE)”, Hua Hin, Thailand.
3. Standard Methods for the Examination of Water and Wastewater;APHA,1989
4. Rumen methanogens, and inhibition of methanogenesis;Baker;Environ. Sci. Biol.,1999
5. Proposal of minimal standards for describing new taxa of methanogenic bacteria;Boone;Int. J. Syst. Evol. Microbiol.,1988