Submitted on: 05 January 2016.
Revised on: 30 January 2016.
Accepted on: 23 February 2016.
Theory and Applications of Categories
Submitted on: 27 July 2011.
Revised on: 04 September 2011.
Accepted on: 24 September 2011.
Theory and Applications of Categories
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Submitted on: 07 May 2007.
Revised on: 24 May 2007.
Accepted on: 16 June 2007.
Theory and Applications of Categories
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Submitted on: 17 September 2012.
Revised on: 27 October 2012.
Accepted on: 06 November 2012.
Theory and Applications of Categories
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Submitted on: 22 December 1998.
Revised on: 07 January 1999.
Accepted on: 31 January 1999.
Theory and Applications of Categories
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