Submitted on: 03 May 2013.
Revised on: 26 August 2013.
Accepted on: 15 October 2013.
___________________APPLIED CATEGORICAL STRUCTURES
Submitted on: 27 October 2002.
Revised on: 03 February 2003.
Accepted on: 18 March 2003.
___________________APPLIED CATEGORICAL STRUCTURES
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Submitted on: 06 March 2001.
Revised on: 26 June 2001.
Accepted on: 06 August 2001.
___________________APPLIED CATEGORICAL STRUCTURES
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Submitted on: 05 July 2008.
Revised on: 24 October 2008.
Accepted on: 03 December 2008.
___________________APPLIED CATEGORICAL STRUCTURES