Submitted on: 30 June 2002.
Revised on: 12 September 2002.
Accepted on: 21 October 2002.
___________________DISCRETE AND CONTINUOUS DYNAMICAL SYSTEMS
Submitted on: 09 June 2008.
Revised on: 17 August 2008.
Accepted on: 02 September 2008.
___________________DISCRETE AND CONTINUOUS DYNAMICAL SYSTEMS
Submitted on: 11 May 2021.
Revised on: 08 August 2021.
Accepted on: 18 September 2021.
___________________DISCRETE AND CONTINUOUS DYNAMICAL SYSTEMS
Submitted on: 13 January 2010.
Revised on: 06 February 2010.
Accepted on: 07 March 2010.
___________________DISCRETE AND CONTINUOUS DYNAMICAL SYSTEMS
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http://reply.papertrans.cn/1/76/7538/7538-26.png
Submitted on: 19 January 1999.
Revised on: 06 April 1999.
Accepted on: 21 May 1999.
___________________DISCRETE AND CONTINUOUS DYNAMICAL SYSTEMS
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Submitted on: 29 December 2003.
Revised on: 01 March 2004.
Accepted on: 15 April 2004.
___________________DISCRETE AND CONTINUOUS DYNAMICAL SYSTEMS