1. From forest landscape to agricultural landscape in the developing tropical country of Malaysia: pattern, process, and their significance on policy;Abdullah;Environmental Management,2008
2. Forest fragmentation and its correlation to human land use change in the state of Selangor, peninsular Malaysia;Abdullah;Forest Ecology and Management,2007
3. Ackom, E., Mabee, W., Saddler, J., 2010. Backgrounder: Major Environmental Criteria of Biofuel Sustainability: IEA Bioenergy Task 39 Report T39-PR4.
4. Global Trade and Environmental Impact Study of the EU Biofuels Mandate: Final Report;Al-Riffai,2010
5. Banse, M., van Meijl, H., Woltjer, G., 2008. The Impact of First and Second Generation Biofuels on Global Agricultural Production, Trade and Land Use. The11th Annual GTAP Conference. Helsinki, Finland. June 12–14, 2008.