1. Fredriksson C. Cyclone gasification of wood powder. Licentiate thesis. ISSN 0280-8242. LuleåUniversity of Technology, Luleå, Sweden, 1996
2. Fredriksson J, Kallner P. Cyclone combustion of wood powder for gas turbine application. Licentiate thesis, ISSN 1100-7990. Royal Institute of Technology, Stockholm, Sweden, 1993. 38–45
3. Haselbacher H. Untersuchungen zur Zyklonbrenn kammerentwicklung für die Verbrennung von Holzpartikeln. In: Forschungsdokumentation, Energie und Umwelt. Bundesministerium für Wissenschaft, Verkehr und Kunst, Vienna, Austria, 1996
4. Joppich A, Haselbacher H. Pneumatic fuel fed system specified for pressurized two stage combustion chamber for pulverized wood. In: Third international conference on heat engines and environmental protection. Department of Heat Engines, Technical University of Budapest, Tata, May 1997, Hungary, 1997. p. 58–67
5. Degerman B, Fredriksson C, Hedin J, Kjellström B, Salman H. Studies of two stage gas turbine combustor for wood powder, Technical report, ISRN LTU-TR-98/21-SE ed. LuleåUniversity of Technology, Luleå, Sweden, 1997. p. 79–83