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Submitted on: 01 October 2004.
Revised on: 12 October 2004.
Accepted on: 18 October 2004.
Nonlinear Analysis-Hybrid Systems
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Submitted on: 20 April 2012.
Revised on: 08 May 2012.
Accepted on: 26 May 2012.
Nonlinear Analysis-Hybrid Systems
Submitted on: 02 February 2008.
Revised on: 26 February 2008.
Accepted on: 15 March 2008.
Nonlinear Analysis-Hybrid Systems
Submitted on: 07 October 2005.
Revised on: 16 November 2005.
Accepted on: 03 December 2005.
Nonlinear Analysis-Hybrid Systems
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