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Submitted on: 31 March 2002.
Revised on: 28 May 2002.
Accepted on: 19 July 2002.
___________________Journal of Communications Software and Systems
Submitted on: 14 March 2008.
Revised on: 19 May 2008.
Accepted on: 04 July 2008.
___________________Journal of Communications Software and Systems
Submitted on: 17 November 2014.
Revised on: 19 December 2014.
Accepted on: 04 February 2015.
___________________Journal of Communications Software and Systems
Submitted on: 24 May 2012.
Revised on: 12 August 2012.
Accepted on: 05 September 2012.
___________________Journal of Communications Software and Systems
Submitted on: 22 July 2021.
Revised on: 17 October 2021.
Accepted on: 19 November 2021.
___________________Journal of Communications Software and Systems