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Submitted on: 10 August 2012.
Revised on: 23 August 2012.
Accepted on: 19 September 2012.
Mathematical Modelling and Analysis
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http://reply.papertrans.cn/3/215/21451/21451-14.png
Submitted on: 20 February 2007.
Revised on: 28 March 2007.
Accepted on: 16 April 2007.
Mathematical Modelling and Analysis
Submitted on: 30 July 2000.
Revised on: 15 August 2000.
Accepted on: 10 September 2000.
Mathematical Modelling and Analysis
Submitted on: 05 January 2009.
Revised on: 07 February 2009.
Accepted on: 04 March 2009.
Mathematical Modelling and Analysis
Submitted on: 06 October 2020.
Revised on: 13 October 2020.
Accepted on: 07 November 2020.
Mathematical Modelling and Analysis
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