1. Bergman, C.A.P., Kiel, H.A.J., 2005. Torrefaction for biomass upgrading. In: Proceedings of the 14th European Biomass Conference & Exhibition, France.
2. Bergman, P.C.A., Boersma, A.R., Zwart, R.W.H., Kiel, J.H.A., 2005a. Development of torrefaction for biomass co-firing in existing coal-fired power stations. ECN report.
3. Bergman, P.C.A., Boersma, A.R., Kiel, J.H.A., Prins, M.J., Ptasinski, K.J., Janssen, F.J.J.G., 2005b. Torrefied biomass for entrained-flow gasification of biomass. ECN report.
4. Torrefaction of reed canary grass, wheat straw and willow to enhance solid fuel qualities and combustion properties;Bridgeman;Fuel,2008
5. Torrefaction and co-torrefaction characterization of hemicellulose, cellulose and lignin as well as torrefaction of some basic constituents in biomass;Chen;Energy,2011