http://reply.papertrans.cn/2/198/19703/19703-31.png
Submitted on: 30 August 2003.
Revised on: 07 November 2003.
Accepted on: 14 December 2003.
___________________JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS
Submitted on: 17 December 2003.
Revised on: 20 February 2004.
Accepted on: 19 March 2004.
___________________JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS
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Submitted on: 11 May 2004.
Revised on: 17 June 2004.
Accepted on: 24 July 2004.
___________________JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS
Submitted on: 20 January 1998.
Revised on: 29 March 1998.
Accepted on: 01 May 1998.
___________________JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS