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2. M. Carter, Four optimization problems in a university student registration system. Talk given at the TIMS Copenhagen Meeting (1984).
3. M.L. Fisher, A. Greenfield and R. Jaikumar, VERGIN: A decision support system for vehicle scheduling, Working Paper 82-06-02, Department of Decision Sciences, The Wharton School, University of Pennsylvania (1982).
4. F. Glover, C. McMillian and B. Novick, Interactive decision software and computer graphics for architectural and space planning, Ann. Oper. Res. 4(1985)
5. A. Greenfield, Improving the user model interface for sensitivity analysis, Ph.D. dissertation, University of Pennsylvania (1984).