1. Handbook of Biomass Gasification;Knoef,2005
2. Behaviour of Tar in Biomass Gasification Systems. Tar Related Problems and Their Solutions;Neeft,1998
3. Biomass gasifier tars: their nature, formation, and conversion;Milne,1998
4. Tar formation in fluidized-bed gasification — impact of fuel properties and operating conditions;van Paasen,2004
5. A review of the primary measures for tar elimination in biomass gasification processes;Devi;Biomass and Bioenergy,2003