1. Suzana Y, Mohamad TA, Uemura Y, Anita R, Lukman I, Shuit SH, et al. Review on agricultural biomass utilization as energy source in Malaysia. In: Proceedings of the 16th ASEAN regional symposium on chemical engineering. 1–2 December 2009, Manila, Philippines. p. 86–9.
2. Foreign Agricultural Service, USDA (United States Department of Agriculture), 2011. Circular Series WAP 05–11 May 2011: World Agricultural Production. ; 2011 [retrieved 29.06.11].
3. MPOB (Malaysian Palm Oil Board), 2010. Overview of the Malaysian Oil Palm Industry 2010. ; 2011 [retrieved June 29.06.11].
4. Impact of torrefaction on syngas production from wood;Couhert;Fuel,2009
5. Influence of torrefaction on the grindability and reactivity of woody biomass;Arias;Fuel Process Technol,2008