1. Feng W, Ji P, Chen B, Zheng D (2011) Analysis of methanol production from biomass gasification. Chem Eng Technol 34:307–317
2. Chang J, Fu Y, Luo Z (2012) Experimental study for dimethyl ether production from biomass gasification and simulation on dimethyl ether production. Biomass Bioenergy 39:67–72
3. Neeft JPA, van Paasen SVB, Knoef HAM, Buffinga GJ, Zielke U, Sjöström K, Brage C, Hasler P, Simell PA, Suomalainen M, Dorrington MA, Thomas L (2002) Tar guideline—a standard method for measurement of tars and particles in biomass producer gases. In: Proceedings of the 12th European conference and technology exhibition on biomass for energy, industry and climate protection, Amsterdam, The Netherlands, pp 469–572
4. Coda B, Zielke U, Suomalainen M, Knoef HAM, Good J, Liliedahl T, Unger C, Ventress L, Neeft JPA, van de Hoek H, Kiel J (2004) Tar measurement standard: a joint effort for the standardisation of a method for measurement of tars and particulates in biomass producer gas. In: Proceedings of the 2nd world biomass conference—biomass for energy, industry and climate protection, Rome, Italy, pp 793–796
5. Hasler P, Nussbaumer T (2000) Sampling and analysis of particles and tars from biomass gasifiers. Biomass Bioenergy 18:61–66