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http://reply.papertrans.cn/3/214/21365/21365-12.png
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Submitted on: 30 July 1999.
Revised on: 06 September 1999.
Accepted on: 22 September 1999.
MATERIALS LETTERS---ELSEVIER
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Submitted on: 31 August 1998.
Revised on: 10 October 1998.
Accepted on: 29 October 1998.
MATERIALS LETTERS
http://reply.papertrans.cn/3/214/21365/21365-18.png
Submitted on: 23 May 2013.
Revised on: 05 July 2013.
Accepted on: 31 July 2013.
MATERIALS LETTERS---ELSEVIER
Submitted on: 18 August 2010.
Revised on: 29 September 2010.
Accepted on: 06 October 2010.
MATERIALS LETTERS