Submitted on: 24 March 2008.
Revised on: 03 April 2008.
Accepted on: 22 April 2008.
Moscow University Chemistry Bulletin
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Submitted on: 07 July 2000.
Revised on: 24 July 2000.
Accepted on: 10 August 2000.
Moscow University Chemistry Bulletin
Submitted on: 17 August 1998.
Revised on: 29 August 1998.
Accepted on: 17 September 1998.
Moscow University Chemistry Bulletin
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