http://reply.papertrans.cn/3/216/21550/21550-31.png
Submitted on: 05 May 2008.
Revised on: 23 May 2008.
Accepted on: 30 May 2008.
MECCANICA---SPRINGER
http://reply.papertrans.cn/3/216/21550/21550-33.png
http://reply.papertrans.cn/3/216/21550/21550-34.png
Submitted on: 21 August 2017.
Revised on: 01 September 2017.
Accepted on: 24 September 2017.
MECCANICA---SPRINGER
http://reply.papertrans.cn/3/216/21550/21550-36.png