1. Adams, E.N., (1984). Optimising preventive maintenance of software products, IBM Journal of Research & Development 28(1), 2–14
2. Bak, P., Tang, C., Wiesenfeld, K., (1987) Self-organized criticality: an explanation of 1/f noise. Physic Review Letters 59, 381–384
3. Bak, P., (1996) How nature works: the science of self-organized criticality. Copernicus, New York
4. Bankes, S., (1993) Exploratory Modeling for Policy Analysis. Operations Research 41(3), 435–449
5. Bankes, S., (1996) Exploratory Modeling. Encyclopedia of Operations Research and Management Science, Saul I. Gass and Carl M. Harris, eds., Kluwer Academic Publishers, Boston