http://reply.papertrans.cn/3/215/21451/21451-21.png
http://reply.papertrans.cn/3/215/21451/21451-22.png
Submitted on: 02 January 2015.
Revised on: 05 February 2015.
Accepted on: 19 February 2015.
Mathematical Modelling and Analysis
Submitted on: 19 June 2022.
Revised on: 23 July 2022.
Accepted on: 29 July 2022.
Mathematical Modelling and Analysis
http://reply.papertrans.cn/3/215/21451/21451-25.png
http://reply.papertrans.cn/3/215/21451/21451-26.png
Submitted on: 06 July 2013.
Revised on: 09 August 2013.
Accepted on: 03 September 2013.
Mathematical Modelling and Analysis
Submitted on: 19 November 2015.
Revised on: 08 December 2015.
Accepted on: 15 December 2015.
Mathematical Modelling and Analysis
http://reply.papertrans.cn/3/215/21451/21451-29.png
Submitted on: 12 June 2017.
Revised on: 19 July 2017.
Accepted on: 05 August 2017.
Mathematical Modelling and Analysis