Submitted on: 15 April 2005.
Revised on: 02 May 2005.
Accepted on: 09 May 2005.
Mathematical Geosciences---SPRINGER HEIDELBERG
Submitted on: 30 September 2013.
Revised on: 01 November 2013.
Accepted on: 09 November 2013.
Mathematical Geosciences
Submitted on: 17 May 2017.
Revised on: 15 June 2017.
Accepted on: 24 June 2017.
Mathematical Geosciences---SPRINGER HEIDELBERG
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http://reply.papertrans.cn/3/215/21440/21440-15.png
http://reply.papertrans.cn/3/215/21440/21440-16.png
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Submitted on: 16 July 2020.
Revised on: 21 August 2020.
Accepted on: 13 September 2020.
Mathematical Geosciences
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Submitted on: 16 April 2001.
Revised on: 04 May 2001.
Accepted on: 09 May 2001.
Mathematical Geosciences