Lanh N V, Bich N H, Hung B N, Khang D N and Preston T R 2016: Effect of the air-flow on the production of syngas, tar and biochar using rice husk and sawdust as feedstock in an updraft gasifier stove. Livestock Research for Rural Development. Volume 28, Article #71. Retrieved , from http://www.lrrd.org/lrrd28/5/lanh28071.html