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Submitted on: 26 June 2005.
Revised on: 10 July 2005.
Accepted on: 22 July 2005.
MICROCHEMICAL JOURNAL---ELSEVIER
Submitted on: 20 August 2007.
Revised on: 14 September 2007.
Accepted on: 28 September 2007.
MICROCHEMICAL JOURNAL
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