5CHRISTOF T. Low-dimensional 0/1-polytopes and branch-and-cut in combinatorial optimization [D]. Hei- delberg: Electrical Engineering Department, Univer- sity of Heidelberg, 1997.
6SRINIVASAN R S. Modeling and performance analysis of cluster tools using Petri nets [J]. IEEE Transaction on Semiconductor Manufacturing, 1998, 11(3): 394- 403.
7JENG M D, XIE Xiaolan. Modeling and analysis of semiconductor manufacturing systems with degraded behavior using Petri nets and siphons [J]. IEEE Trans- action on Robotics and Automation, 2001, 17(5): 576- 588.
8SHIN Y H, LEE T E, KIM J H, et al. Modeling and im- plementing a real-time scheduler for dual-armed clus- ter tools [J]. Computing in Industry, 2001, 45(1): 13- 27.
9XIONG G, NYBERG T R. Push/pull production plan and schedule used in modern refinery CIMS [J]. IEEE Transaction on Robotics and Automation, 2000, 16(6): 397-410.
10WOOD S C. Simple performance models for integrated processing tools [J]. IEEE Transactions on Semicon- ductor Manufacturing, 1996, 9(3): 320-328.