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Submitted on: 13 November 2015.
Revised on: 29 December 2015.
Accepted on: 11 January 2016.
___________________JOURNAL OF PURE AND APPLIED ALGEBRA
Submitted on: 12 February 2009.
Revised on: 10 April 2009.
Accepted on: 30 April 2009.
___________________JOURNAL OF PURE AND APPLIED ALGEBRA
Submitted on: 24 November 2003.
Revised on: 15 January 2004.
Accepted on: 10 March 2004.
___________________JOURNAL OF PURE AND APPLIED ALGEBRA
Submitted on: 21 April 2004.
Revised on: 10 July 2004.
Accepted on: 17 August 2004.
___________________JOURNAL OF PURE AND APPLIED ALGEBRA
Submitted on: 24 February 2020.
Revised on: 10 June 2020.
Accepted on: 18 July 2020.
___________________JOURNAL OF PURE AND APPLIED ALGEBRA
Submitted on: 30 March 2001.
Revised on: 22 April 2001.
Accepted on: 17 May 2001.
___________________JOURNAL OF PURE AND APPLIED ALGEBRA
Submitted on: 01 August 2005.
Revised on: 13 November 2005.
Accepted on: 05 January 2006.
___________________JOURNAL OF PURE AND APPLIED ALGEBRA