Submitted on: 20 May 2002.
Revised on: 11 August 2002.
Accepted on: 23 August 2002.
___________________INTERNATIONAL JOURNAL OF APPROXIMATE REASONING
Submitted on: 25 July 1999.
Revised on: 15 August 1999.
Accepted on: 28 August 1999.
___________________INTERNATIONAL JOURNAL OF APPROXIMATE REASONING
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http://reply.papertrans.cn/2/131/13026/13026-34.png
Submitted on: 09 January 1999.
Revised on: 07 April 1999.
Accepted on: 22 April 1999.
___________________INTERNATIONAL JOURNAL OF APPROXIMATE REASONING
Submitted on: 12 December 1998.
Revised on: 22 February 1999.
Accepted on: 31 March 1999.
___________________INTERNATIONAL JOURNAL OF APPROXIMATE REASONING