Submitted on: 02 December 2001.
Revised on: 23 January 2002.
Accepted on: 05 March 2002.
___________________INTERNATIONAL JOURNAL OF NONLINEAR SCIENCES AND NUMERICAL SIMULATION
Submitted on: 25 May 2012.
Revised on: 15 September 2012.
Accepted on: 02 November 2012.
___________________INTERNATIONAL JOURNAL OF NONLINEAR SCIENCES AND NUMERICAL SIMULATION
Submitted on: 27 February 2011.
Revised on: 20 April 2011.
Accepted on: 11 June 2011.
___________________INTERNATIONAL JOURNAL OF NONLINEAR SCIENCES AND NUMERICAL SIMULATION
Submitted on: 30 November 2006.
Revised on: 21 December 2006.
Accepted on: 07 February 2007.
___________________INTERNATIONAL JOURNAL OF NONLINEAR SCIENCES AND NUMERICAL SIMULATION
Submitted on: 11 October 1998.
Revised on: 07 December 1998.
Accepted on: 25 December 1998.
___________________INTERNATIONAL JOURNAL OF NONLINEAR SCIENCES AND NUMERICAL SIMULATION
Submitted on: 08 April 2012.
Revised on: 22 May 2012.
Accepted on: 20 July 2012.
___________________INTERNATIONAL JOURNAL OF NONLINEAR SCIENCES AND NUMERICAL SIMULATION
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Submitted on: 20 June 2017.
Revised on: 02 October 2017.
Accepted on: 18 October 2017.
___________________INTERNATIONAL JOURNAL OF NONLINEAR SCIENCES AND NUMERICAL SIMULATION