Submitted on: 27 December 2007.
Revised on: 14 April 2008.
Accepted on: 28 April 2008.
___________________ICGA JOURNAL---IOS PRESS
http://reply.papertrans.cn/2/118/11708/11708-12.png
Submitted on: 05 April 2005.
Revised on: 27 June 2005.
Accepted on: 21 July 2005.
___________________ICGA JOURNAL---IOS PRESS
Submitted on: 10 November 2020.
Revised on: 17 January 2021.
Accepted on: 15 February 2021.
___________________ICGA JOURNAL---IOS PRESS
http://reply.papertrans.cn/2/118/11708/11708-15.png
Submitted on: 18 August 2016.
Revised on: 12 October 2016.
Accepted on: 28 October 2016.
___________________ICGA JOURNAL---IOS PRESS
http://reply.papertrans.cn/2/118/11708/11708-17.png
http://reply.papertrans.cn/2/118/11708/11708-18.png
http://reply.papertrans.cn/2/118/11708/11708-19.png
Submitted on: 18 August 2018.
Revised on: 22 September 2018.
Accepted on: 27 October 2018.
___________________ICGA JOURNAL---IOS PRESS