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Submitted on: 26 January 2010.
Revised on: 22 May 2010.
Accepted on: 28 June 2010.
___________________Chemistry Journal of Moldova---ACAD SCIENCES MOLDOVA, INST CHEMISTRY
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Submitted on: 09 December 2021.
Revised on: 11 January 2022.
Accepted on: 13 February 2022.
___________________Chemistry Journal of Moldova---ACAD SCIENCES MOLDOVA, INST CHEMISTRY
Submitted on: 28 October 2010.
Revised on: 22 February 2011.
Accepted on: 06 April 2011.
___________________Chemistry Journal of Moldova---ACAD SCIENCES MOLDOVA, INST CHEMISTRY
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Submitted on: 10 March 2004.
Revised on: 18 April 2004.
Accepted on: 14 May 2004.
___________________Chemistry Journal of Moldova---ACAD SCIENCES MOLDOVA, INST CHEMISTRY