1. Ackoff, R.L. (1979). “The Future of OR is Past,” Jl. Operational Research Society, 30, 93–104.
2. Bhat, U.N. (1978). “Theory of Queues,” in J.J. Moder and S.E. Elmaghraby, eds. Handbook of Operations Research, Volume 1, Van Nostrand Reinhold, New York, pp. 352–397.
3. Brooke, A., Kendrick, D., and Meeraus, A. (1992). GAMS, Release 2.25, The Scientific Press, South San Francisco, California.
4. Burman, M. (1995). “New Results in Flow Line Analysis,” PhD dissertation, Massachusetts Institute of Technology, Cambridge.
5. Erlenkotter, D. (1989). “An Early Classic Misplaced: Ford W. Harris's Economic Order Quantity Model of 1915,” Management Science, 35, 898–900.