Submitted on: 24 May 2021.
Revised on: 12 September 2021.
Accepted on: 20 October 2021.
___________________Communications in Nonlinear Science and Numerical Simulation
Submitted on: 14 April 2000.
Revised on: 05 July 2000.
Accepted on: 12 August 2000.
___________________Communications in Nonlinear Science and Numerical Simulation
Submitted on: 06 February 2015.
Revised on: 17 May 2015.
Accepted on: 10 July 2015.
___________________Communications in Nonlinear Science and Numerical Simulation
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Submitted on: 09 September 2016.
Revised on: 30 November 2016.
Accepted on: 16 January 2017.
___________________Communications in Nonlinear Science and Numerical Simulation
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Submitted on: 28 July 2010.
Revised on: 28 September 2010.
Accepted on: 26 October 2010.
___________________Communications in Nonlinear Science and Numerical Simulation