1Saw ik T.A multilevelmachine and vehicle scheduling in a flexible manufacturing system[J].Mathematic and Computer Modelling,1996,23 (7):45- 57.
2Bilge U.U lusoy G A time window approach to simultaneous scheduling of machines andmaterial handling system in an FMS[J].Operations Research,1995,43(6):1058-1069.
3Logendran R.A sonthinen a tabu search-based approach for scheduling job-shop type flexible manufacturing system s[J]. Journal of Operational Research Society,1997,48:244-277.