1. Aparecida de Lima M. Methane to markets agriculture subcommittee. Brazilian Agricultural Research Corporation; 2006.
2. Bley Jr C, Libanio JC, Galinkin M, Oliveira, MM. Agroenergia da biomassa residual: perspectivas Energéticas, Ambientais e socioeconômicas. 2 ª ed. Itaipu Binacional, Organização Nações Unidas para Alimentação e Agricultura/FAO TechnoPolitik Editora; 2009.
3. Deutsche Energie-Agentur GmbH,2010
4. Biodigester global case studies report;Hojnacki,2011
5. A comparison of the environmental benefits of bagasse-derived electricity and fuel ethanol on a life-cycle basis;Botha;Energy Policy,2006