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Submitted on: 14 June 2001.
Revised on: 04 August 2001.
Accepted on: 20 September 2001.
___________________Journal of Sulfur Chemistry---TAYLOR & FRANCIS LTD
Submitted on: 11 June 2009.
Revised on: 26 September 2009.
Accepted on: 23 October 2009.
___________________Journal of Sulfur Chemistry---TAYLOR & FRANCIS LTD
Submitted on: 08 October 2016.
Revised on: 31 December 2016.
Accepted on: 06 February 2017.
___________________Journal of Sulfur Chemistry---TAYLOR & FRANCIS LTD
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