1. Perspectives of Woody Biomass for Energy: Survey of State Foresters, State Energy Biomass Contacts, and National Council of Forestry Association Executives.;Aguilar;Journal of Forestry,2009
2. See Harrison, Gillespie, and Fields (2005) for a detailed discussion of marginal effect estimations in ordinal models.
3. Economic Impacts of Woody Biomass Utilization for Bioenergy in Mississippi.;Perez-Verdin;Forest Products Journal,2008
4. Generalized Ordered Logit/Partial Proportional Odds Models for Ordinal Dependent Variables.;Williams;The Stata Journal,2006