Submitted on: 22 May 1999.
Revised on: 29 June 1999.
Accepted on: 23 August 1999.
___________________JOURNAL OF MATERIALS RESEARCH---SPRINGER HEIDELBERG
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Submitted on: 11 September 2003.
Revised on: 27 December 2003.
Accepted on: 16 February 2004.
___________________JOURNAL OF MATERIALS RESEARCH---SPRINGER HEIDELBERG
Submitted on: 14 July 2014.
Revised on: 02 November 2014.
Accepted on: 10 December 2014.
___________________JOURNAL OF MATERIALS RESEARCH---SPRINGER HEIDELBERG
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