1. Division of Bio-resource, Paper and Coatings Technology, School of Industrial Technology, Universiti Sains Malaysia, 11800 Penang, Malaysia,
2. Division of Bio-resource, Paper and Coatings Technology, School of Industrial Technology, Universiti Sains Malaysia, 11800 Penang, Malaysia
3. Department of Natural Resource Ecology and Management, Oklahoma State University, Stilwater, Oklahoma 74078-6013, USA
4. Forestry and Forest Products Research Institute (FFPRI), Tsukuba, Ibaraki 305-8687, Japan
5. Universiti Malaysia Sabah, 88999 Kota Kinabalu, Sabah, Malaysia
6. Faculty of Forestry, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia