1. P.F. Yu, X. Song, L. Zhang and Q. Bu: Computer Integrated Manufacturing Systems, Vol. 15 (2009) No. 3, pp.959-967. (In Chinese).
2. S. Alten and R.A. Danofsky: Annals of Nuclear Energy, Vol. 20 (1993) No. 10, pp.691-700.
3. M.H. Shenassa and K. Khakpour: Proc. The International Conference on Computer and Communication Engineering 2008 (Kuala Lumpur, Malaysia, May 13-15, 2008), Vol. 1, pp.310-313.
4. S.X. Wu: Computer Engineering and Application, Vol. 35 (1999) No. 4, pp.82-84. (In Chinese).
5. J. Mylopoulos, V. Chaudhri, D. Plexousakis, A. Shrufi and T. Topaloglou: The VLDB Journal, Vol. 5 (1996) No. 4, pp.238-263.