http://reply.papertrans.cn/1/23/2215/2215-11.png
http://reply.papertrans.cn/1/23/2215/2215-12.png
http://reply.papertrans.cn/1/23/2215/2215-13.png
Submitted on: 24 July 2021.
Revised on: 17 November 2021.
Accepted on: 11 January 2022.
___________________APPLIED MATHEMATICAL MODELLING
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Submitted on: 08 November 2015.
Revised on: 06 January 2016.
Accepted on: 25 February 2016.
___________________APPLIED MATHEMATICAL MODELLING
http://reply.papertrans.cn/1/23/2215/2215-17.png
Submitted on: 16 February 2016.
Revised on: 21 May 2016.
Accepted on: 29 June 2016.
___________________APPLIED MATHEMATICAL MODELLING
http://reply.papertrans.cn/1/23/2215/2215-19.png
Submitted on: 18 March 2003.
Revised on: 08 May 2003.
Accepted on: 01 June 2003.
___________________APPLIED MATHEMATICAL MODELLING