1. Center for Sustainable Biomaterials & Bioenergy, West Virginia University, Morgantown, WV, USA
2. Division of Forestry and Natural Resources, West Virginia University, Morgantown, WV, USA
3. Department of Forest Biomaterials, North Carolina State University, Raleigh, NC, USA
4. Research and Development, USDA Forest Service Rocky Mountain Research Station, Missoula, MT, USA