1. Ahrenfeldt, J., Bain, R.L., Beld, B.v.d., 2005. Handbook Biomass Gasification BTG Biomass Technology Group BV.
2. Baky, A., Eriksson, O., 2003. Systems Analysis of Organic Waste Management in Denmark. Environmental Project No. 822. Danish Environmental Agency, Copenhagen.
3. Integration of a hydrogen economy into the German energy system: an optimising modelling approach;Ball;International Journal of Hydrogen Energy,2007
4. Life cycle assessment of urban waste management: energy performances and environmental impacts. The case of Rome, Italy;Cherubini;Waste Management,2008
5. Christensen, T.H., Hansen, T.L., Kirkerby, J.T., Jansen, J.l.C., Svärd, Å., Toudal, J.K., Hulgaard, T., Rasmussen, H.W., Gruvberger, C., 2003. Basisdokumentation af biogaspotentialet i organisk dagrenovation (base documentation for the biogas potential in organic municipal waste) 802. Danish Environmental Protection Agency, Copenhagen, Denmark.