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Submitted on: 30 July 2002.
Revised on: 25 November 2002.
Accepted on: 06 January 2003.
___________________Journal of Computer Security---IOS PRESS
Submitted on: 24 June 2020.
Revised on: 09 August 2020.
Accepted on: 28 August 2020.
___________________Journal of Computer Security---IOS PRESS
Submitted on: 16 January 2006.
Revised on: 03 April 2006.
Accepted on: 19 May 2006.
___________________Journal of Computer Security---IOS PRESS
Submitted on: 24 June 2010.
Revised on: 15 August 2010.
Accepted on: 09 October 2010.
___________________Journal of Computer Security---IOS PRESS
Submitted on: 25 September 2010.
Revised on: 21 November 2010.
Accepted on: 15 January 2011.
___________________Journal of Computer Security---IOS PRESS
Submitted on: 29 August 2010.
Revised on: 23 December 2010.
Accepted on: 06 January 2011.
___________________Journal of Computer Security---IOS PRESS
Submitted on: 20 September 2004.
Revised on: 29 October 2004.
Accepted on: 03 December 2004.
___________________Journal of Computer Security---IOS PRESS
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