1. Briggs, D.G., 1989. Tree Value System: Description and Assumptions. USDA Forest Service, General Technical Report PNW-239, Portland, OR
2. Burger, D., Jamnick, M., 1991. Analysis of wood procurement strategies: Supplying multiple mills from multiple sources. In: Proceedings of 1991, Symposium on System Analysis in Forest Resources, Charleston, South Carolina, USDA Forest Service, General Technical Report SE 74, Asheville, NC, pp. 17–23
3. Chevalier, P., 1995. Baobab, Instructions Manual. Department of Industrial Engineering, University of Chile, Santiago.
4. Bucking tree-length stems optimally;Eng;Canadian Journal of Forest Research,1986
5. Linear programming and related approaches in forest planning;Garcia;New Zealand Journal of Forest Science,1990