1. Professor, Dept. of Wood and Paper Science, North Carolina State Univ., Raleigh, NC 27695-8005.
2. Graduate Student, Dept. of Wood and Paper Science, North Carolina State Univ., Raleigh, NC 27695-8005.
3. Research Scientist, CSIRO Manufacturing and Infrastructure Technology, PO Box 56, Highett, 3190, Australia.
4. Team Leader and Principal Research Scientist, CSIRO Manufacturing and Infrastructure Technology, PO Box 56, Highett, 3190, Australia.