Submitted on: 01 February 2002.
Revised on: 21 March 2002.
Accepted on: 30 April 2002.
___________________APPLIED SURFACE SCIENCE---ELSEVIER
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Submitted on: 11 January 2014.
Revised on: 26 March 2014.
Accepted on: 19 April 2014.
___________________APPLIED SURFACE SCIENCE---ELSEVIER
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Submitted on: 05 January 1998.
Revised on: 22 February 1998.
Accepted on: 07 April 1998.
___________________APPLIED SURFACE SCIENCE---ELSEVIER
Submitted on: 18 August 2022.
Revised on: 28 October 2022.
Accepted on: 14 November 2022.
___________________APPLIED SURFACE SCIENCE---ELSEVIER
Submitted on: 03 May 2016.
Revised on: 22 July 2016.
Accepted on: 23 August 2016.
___________________APPLIED SURFACE SCIENCE---ELSEVIER
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