http://reply.papertrans.cn/1/23/2216/2216-11.png
http://reply.papertrans.cn/1/23/2216/2216-12.png
http://reply.papertrans.cn/1/23/2216/2216-13.png
http://reply.papertrans.cn/1/23/2216/2216-14.png
Submitted on: 14 December 2021.
Revised on: 01 April 2022.
Accepted on: 30 April 2022.
___________________APPLIED MATHEMATICAL MODELLING
http://reply.papertrans.cn/1/23/2216/2216-16.png
Submitted on: 03 October 2021.
Revised on: 30 December 2021.
Accepted on: 22 February 2022.
___________________APPLIED MATHEMATICAL MODELLING
http://reply.papertrans.cn/1/23/2216/2216-18.png
Submitted on: 09 February 2011.
Revised on: 01 May 2011.
Accepted on: 13 May 2011.
___________________APPLIED MATHEMATICAL MODELLING
Submitted on: 28 February 1999.
Revised on: 16 June 1999.
Accepted on: 05 August 1999.
___________________APPLIED MATHEMATICAL MODELLING