1. Bak, P., Sneppen, K.: Punctuated equilibrium and criticality in a simple model of evolution. Phys. Rev. Lett. 71(24), 4083–4086 (1993)
2. Bettinger, P., Sessions, J.: Spatial forest planning: to adopt, or not to adopt? J. For. 101(2), 24–29 (2003)
3. Bettinger, P., Chung, W.: The key literature of, and trends in, forest-level management planning in North America, 1950-2001. Int. For. Rev. 6, 40–50 (2004)
4. Bettinger, P., Zhu, J.: A new heuristic for solving spatially constrained forest planning problems based on mitigation of infeasibilities radiating outward from a forced choice. Silva Fennica 40(2), 315–333 (2006)
5. Boettcher, S., Percus, A.G.: Extremal optimization: methods derived from co-evolution. In: GECCO 1999: Proc. Genet. and Evol. Comput. Conf., pp. 825–832. Morgan Kaufmann, San Francisco (1999)