Submitted on: 21 October 2001.
Revised on: 21 November 2001.
Accepted on: 08 January 2002.
___________________JOURNAL OF THE CHILEAN CHEMICAL SOCIETY
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Submitted on: 10 January 2019.
Revised on: 25 February 2019.
Accepted on: 04 April 2019.
___________________JOURNAL OF THE CHILEAN CHEMICAL SOCIETY
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Submitted on: 07 December 2005.
Revised on: 11 March 2006.
Accepted on: 01 April 2006.
___________________JOURNAL OF THE CHILEAN CHEMICAL SOCIETY
Submitted on: 21 September 2019.
Revised on: 30 November 2019.
Accepted on: 12 January 2020.
___________________JOURNAL OF THE CHILEAN CHEMICAL SOCIETY
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