1. Harley Langdale Jr. Center for Forest Business, Warnell School of Forestry and Natural Resources, University of Georgia , 180 E. Green St, Athens, GA 30602 , USA
2. Warnell School of Forestry and Natural Resources, University of Georgia , 180 E. Green St, Athens, GA 30602 , USA
3. Department of Forestry and Environmental Conservation, Clemson University , 230 Lehotsky Hall, Clemson, SC 29634 , USA