Submitted on: 15 July 2000.
Revised on: 20 October 2000.
Accepted on: 04 November 2000.
___________________DISCRETE MATHEMATICS AND THEORETICAL COMPUTER SCIENCE
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Submitted on: 05 September 1998.
Revised on: 22 December 1998.
Accepted on: 07 January 1999.
___________________DISCRETE MATHEMATICS AND THEORETICAL COMPUTER SCIENCE
Submitted on: 16 September 2005.
Revised on: 25 November 2005.
Accepted on: 15 January 2006.
___________________DISCRETE MATHEMATICS AND THEORETICAL COMPUTER SCIENCE
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Submitted on: 28 December 2024.
Revised on: 19 February 2025.
Accepted on: 27 March 2025.
___________________DISCRETE MATHEMATICS AND THEORETICAL COMPUTER SCIENCE
Submitted on: 30 January 2023.
Revised on: 27 March 2023.
Accepted on: 21 May 2023.
___________________DISCRETE MATHEMATICS AND THEORETICAL COMPUTER SCIENCE