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Submitted on: 27 May 2001.
Revised on: 10 July 2001.
Accepted on: 06 August 2001.
Nonlinear Analysis-Modelling and Control
Submitted on: 01 November 2016.
Revised on: 01 December 2016.
Accepted on: 24 December 2016.
Nonlinear Analysis-Modelling and Control
Submitted on: 26 December 2000.
Revised on: 08 January 2001.
Accepted on: 25 January 2001.
Nonlinear Analysis-Modelling and Control