A study discussing the feasibility and potential production of biogas, which could be used in poor communities in European countries (Romania, Georgia and other countries).
BALASUBRAMANIYAM, N. MERIGGI, N. ZISENGWE, L. BUYSMAN, E. (2008): Production in climates with long cold winters. (= Feasibility Study ). Wageningen University URL [Accessed: 07.09.2010]