http://reply.papertrans.cn/1/23/2217/2217-21.png
http://reply.papertrans.cn/1/23/2217/2217-22.png
http://reply.papertrans.cn/1/23/2217/2217-23.png
Submitted on: 11 October 2015.
Revised on: 04 January 2016.
Accepted on: 02 March 2016.
___________________APPLIED MATHEMATICS AND COMPUTATION
http://reply.papertrans.cn/1/23/2217/2217-25.png
Submitted on: 29 January 2010.
Revised on: 19 February 2010.
Accepted on: 04 March 2010.
___________________APPLIED MATHEMATICS AND COMPUTATION
Submitted on: 23 February 2016.
Revised on: 24 April 2016.
Accepted on: 15 June 2016.
___________________APPLIED MATHEMATICS AND COMPUTATION
http://reply.papertrans.cn/1/23/2217/2217-28.png
Submitted on: 20 November 2001.
Revised on: 24 February 2002.
Accepted on: 23 April 2002.
___________________APPLIED MATHEMATICS AND COMPUTATION
http://reply.papertrans.cn/1/23/2217/2217-30.png