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Submitted on: 30 March 2003.
Revised on: 14 July 2003.
Accepted on: 13 August 2003.
___________________ACM TRANSACTIONS ON DESIGN AUTOMATION OF ELECTRONIC SYSTEMS
Submitted on: 18 August 1998.
Revised on: 26 October 1998.
Accepted on: 30 November 1998.
___________________ACM TRANSACTIONS ON DESIGN AUTOMATION OF ELECTRONIC SYSTEMS
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