1. 1. Kusiak A. , “Flexible manufacturing systems: A structural approach” Intern. J. Production Research (to appear in 1985).
2. 3. Changs Y.L. and Sullivan R.S. , “Real-time scheduling of flexible manufacturing systems: A conceptual mathematical formulation” Presented at TIMS/ORSA Meeting, San Francisco, U.S.A. (1984).
3. 8. Vannelli A. , "Approximating a class of graph decomposition problems by linear transportation problems", presented at TIMS/ORSA Meeting, San Francisco, 05 (1984)