Submitted on: 09 September 2000.
Revised on: 21 September 2000.
Accepted on: 15 October 2000.
Revista Romana de Materiale-Romanian Journal of Materials
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Submitted on: 22 January 2010.
Revised on: 03 March 2010.
Accepted on: 24 March 2010.
Revista Romana de Materiale-Romanian Journal of Materials
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Submitted on: 07 October 1999.
Revised on: 20 October 1999.
Accepted on: 26 October 1999.
Revista Romana de Materiale-Romanian Journal of Materials
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