1. Ackoff, R. L. (1979). The future of operations research is past. Journal of the Operations Research Society 30, 93–104.
2. Arms, W. Y., & Walter, T. P. (1974). A simulation model for purchasing duplicate models in a library. Journal of Library Automation, 7, 73–82.
3. Baker, N. R., & Nance, R. E. (1970). Organisational analyses and simulation studies of university libraries: A methodological overview. Information Storage and Retrieval, 5(4), 153–168.
4. Bazillion, R. J. (2001). Academic libraries in the digital revolution, EDUCAUSE Quarterly, 1, 51–55.
5. Beasley, J. E. (n.d.). OR-Notes. Retrieved from
http://people.brunel.ac.uk/~mastjjb/jeb/or/intro.html