1. Cowling, E.B. (1975). Physical and chemical constraints in the hydrolysis of cellulose and lignocellulosic materials. In Biotechnology and Bioengineering Symposium (No. 5, p. 163).
2. Experimental poisoning of goats by Ipomoea carnea subsp. fistulosa in Argentina: A clinic and pathological correlation;de Pérez;Pesq. Vet. Bras,2012
3. Dueblein, D. & Steinhauser, A. (2008). Biogas from waste and renewable resources. KGaA: Wiley-VCH Verlag GmbH and Co.
4. KriterieneinernachhaltigenBioenergienutzungimglobalenMaßstab;Fehrenbach;UBA-Forschungsbericht,2008
5. Rice straw as a renewable energy source in India;Gadde;Thailand, and the Philippines: overall potential and limitations for energy contribution and greenhouse gas mitigation. Biomass and Bioenergy,2009