http://reply.papertrans.cn/2/150/14930/14930-11.png
http://reply.papertrans.cn/2/150/14930/14930-12.png
http://reply.papertrans.cn/2/150/14930/14930-13.png
http://reply.papertrans.cn/2/150/14930/14930-14.png
http://reply.papertrans.cn/2/150/14930/14930-15.png
Submitted on: 12 June 2000.
Revised on: 18 September 2000.
Accepted on: 10 November 2000.
___________________JOM---SPRINGER
http://reply.papertrans.cn/2/150/14930/14930-17.png
Submitted on: 22 April 2015.
Revised on: 06 August 2015.
Accepted on: 07 September 2015.
___________________JOM---SPRINGER
http://reply.papertrans.cn/2/150/14930/14930-19.png
Submitted on: 03 June 2005.
Revised on: 05 September 2005.
Accepted on: 16 October 2005.
___________________JOM---SPRINGER