Submitted on: 03 February 2021.
Revised on: 10 March 2021.
Accepted on: 26 March 2021.
Nuovo Cimento C-Colloquia and Communications in Physics
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Submitted on: 22 September 2011.
Revised on: 30 September 2011.
Accepted on: 05 October 2011.
Nuovo Cimento C-Colloquia and Communications in Physics
Submitted on: 20 May 1999.
Revised on: 06 June 1999.
Accepted on: 22 June 1999.
Nuovo Cimento C-Colloquia and Communications in Physics
http://reply.papertrans.cn/3/235/23409/23409-25.png
http://reply.papertrans.cn/3/235/23409/23409-26.png
http://reply.papertrans.cn/3/235/23409/23409-27.png
http://reply.papertrans.cn/3/235/23409/23409-28.png
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Submitted on: 24 May 2015.
Revised on: 01 July 2015.
Accepted on: 06 July 2015.
Nuovo Cimento C-Colloquia and Communications in Physics