[Gravitis, J. (2006). Green Biobased Chemistry Platform for Sustainability. In: Environmental Education, Communication and Sustainability, 23: Sustainable Development in the Baltic and Beyond, Peter Lang Publishers House, Frankfurt am Maim, Berlin, Bern, Bruxelles, New York, Oxford, Wien, 145-160.]Search in Google Scholar
[Gravitis, J. (2007). Zero techniques and systems - ZETS strength and weakness, J. Cleaner Production, 15, 1190-1197.10.1016/j.jclepro.2006.07.038]Search in Google Scholar
[Gravitis, J. (2008). Biorefinery: Biomaterials and Bioenergy from Photosynthesis, Within Zero Emissions Framework. In: Sustainable Energy Production and Consumption. Benifits, Strategies and Environmental Costing. NATO Science for Peace and Security, Barbir F., Ulgiati S., (Eds.), Springer, 327-337.10.1007/978-1-4020-8494-2_22]Search in Google Scholar
[Kamm, B., & Kamm, M. (2004). Principles of biorefineries, Applied Microbiol. & Biotech., 64, 137-145.]Search in Google Scholar
[Abolins, J., & Gravitis, J. (2007). Biomass conversion to transportation fuels, combustibles, and nano-materials by steam explosion, Latvian J. Phys. Techn. Sci., 4, 29-39.]Search in Google Scholar
[Gravitis, J. (1987). Theoretical and applied aspects of the steam explosion plant biomass autohydrolysis method, Khimiya Drevesiny (Wood Chemistry), 5, 3-21 (In Russian).]Search in Google Scholar
[Heitz, M., Capek-Ménard, E., Koeberle, P.G., Gagné, J., Chornet, E., Overend, R.P., Taylor, J.D., & Yu, E. (1991). Fractionation of Populus tremuloides at the pilot plant scale: Optimization of steam pretreatment conditions using the STAKE II technology, Biores. Tecnol., 35, 23-32.10.1016/0960-8524(91)90078-X]Search in Google Scholar
[Wark, K., Jr. (1988). Thermodynamics New York: McGraw-Hill, 854.]Search in Google Scholar
[Borovikov, A., & Ugolev, B. (1989). Handbook of Wood (in Russian): Lesnaya Promishlennost, 144.]Search in Google Scholar
[Rowell, R., edit. (1984). The Chemistry of Solid Wood Adv. in Chem. Ser. 207, Washington DC: Amer. Chem. Soc., 153.10.1021/ba-1984-0207]Search in Google Scholar
[Smil, V. (1999). Energies, Cambridge MA: MIT Press, 210.]Search in Google Scholar
[Smil, V. (2003). The Earth's Biosphere, Cambridge MA: MIT Press, 286.]Search in Google Scholar
[Carere, C.R., Sparling, R., Cicek, N., & Levin, D.B. (2008). Third Generation Biofuels via Direct Cellulose Fermentation, Intern. J. Mol. Sci., 9, 1342-1360.10.3390/ijms9071342263571819325807]Search in Google Scholar
[Huber, G.W., and Bruce, E., & Dale, B.E. (2009). Grassoline at the Pump. Scientific American. July. 40-47.10.1038/scientificamerican0709-5219555024]Search in Google Scholar
[Ulgiati, S., & Sciubba, E. (2003). Thermodynamic and Environmental Assessment of Bioethanol Production from Corn, Advances in Energy Studies - 3rd Biennal International Workshop, Porto Venere, 629-647.]Search in Google Scholar
[http://www.spiegel.de/international/world/0,1518,archiv-2009-027,00.html]Search in Google Scholar