1. Oasmaa A, Leppämäki E, Koponen P, Levander J, Tapola E. Physical characterization of biomass-based pyrolysis liquids – Application of standard fuel oil analyses. VTT, Technical Research Centre of Finland, ESPOO; 1997.
2. Additives to lower and stabilize the viscosity of pyrolysis oils during storage;Diebold;Energy Fuels,1997
3. Diebold JP. A review of the chemical and physical mechanisms of the storage stability of fast pyrolysis bio-oils. Subcontractor report for the national renewable energy laboratory. Golden, CO; January 2000 [NREL/SR-570-27613].
4. Fast pyrolysis of forestry residue. 3. Storage stability of liquid fuel;Oasmaa;Energy Fuels,2003
5. Bio-oils obtained by vacuum pyrolysis of softwood bark as a liquid fuel for gas turbines. Part II: stability and ageing of bio-oil and its blends with methanol and a pyrolytic aqueous phase;Boucher;Biomass Bioenergy,2000