Submitted on: 24 November 2015.
Revised on: 01 March 2016.
Accepted on: 30 March 2016.
___________________INDIANA UNIVERSITY MATHEMATICS JOURNAL
http://reply.papertrans.cn/2/125/12426/12426-22.png
http://reply.papertrans.cn/2/125/12426/12426-23.png
http://reply.papertrans.cn/2/125/12426/12426-24.png
http://reply.papertrans.cn/2/125/12426/12426-25.png
Submitted on: 05 June 2011.
Revised on: 26 June 2011.
Accepted on: 01 August 2011.
___________________INDIANA UNIVERSITY MATHEMATICS JOURNAL
Submitted on: 13 October 2010.
Revised on: 17 January 2011.
Accepted on: 25 February 2011.
___________________INDIANA UNIVERSITY MATHEMATICS JOURNAL
http://reply.papertrans.cn/2/125/12426/12426-28.png
http://reply.papertrans.cn/2/125/12426/12426-29.png
Submitted on: 28 December 2007.
Revised on: 21 March 2008.
Accepted on: 06 May 2008.
___________________INDIANA UNIVERSITY MATHEMATICS JOURNAL