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Submitted on: 05 April 2013.
Revised on: 28 April 2013.
Accepted on: 23 May 2013.
___________________JOURNAL OF SYMBOLIC LOGIC---CAMBRIDGE UNIV PRESS
http://reply.papertrans.cn/2/196/19501/19501-33.png
Submitted on: 20 January 2000.
Revised on: 16 February 2000.
Accepted on: 12 April 2000.
___________________JOURNAL OF SYMBOLIC LOGIC---CAMBRIDGE UNIV PRESS
Submitted on: 06 November 2004.
Revised on: 28 December 2004.
Accepted on: 24 January 2005.
___________________JOURNAL OF SYMBOLIC LOGIC---CAMBRIDGE UNIV PRESS
Submitted on: 15 August 2003.
Revised on: 05 October 2003.
Accepted on: 24 November 2003.
___________________JOURNAL OF SYMBOLIC LOGIC---CAMBRIDGE UNIV PRESS