Submitted on: 06 November 2011.
Revised on: 29 January 2012.
Accepted on: 18 March 2012.
___________________Journal of Noncommutative Geometry
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http://reply.papertrans.cn/2/184/18335/18335-33.png
Submitted on: 30 March 2002.
Revised on: 19 July 2002.
Accepted on: 23 August 2002.
___________________Journal of Noncommutative Geometry
Submitted on: 17 February 2007.
Revised on: 16 March 2007.
Accepted on: 08 May 2007.
___________________Journal of Noncommutative Geometry
Submitted on: 09 November 2012.
Revised on: 27 February 2013.
Accepted on: 19 April 2013.
___________________Journal of Noncommutative Geometry