Submitted on: 14 February 1999.
Revised on: 20 March 1999.
Accepted on: 13 April 1999.
NONLINEAR ANALYSIS-THEORY METHODS & APPLICATIONS
Submitted on: 27 September 2018.
Revised on: 09 November 2018.
Accepted on: 15 November 2018.
NONLINEAR ANALYSIS-THEORY METHODS & APPLICATIONS
Submitted on: 07 April 2019.
Revised on: 21 April 2019.
Accepted on: 04 May 2019.
NONLINEAR ANALYSIS-THEORY METHODS & APPLICATIONS
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Submitted on: 07 September 2012.
Revised on: 15 October 2012.
Accepted on: 04 November 2012.
NONLINEAR ANALYSIS-THEORY METHODS & APPLICATIONS
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http://reply.papertrans.cn/3/232/23200/23200-17.png
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Submitted on: 31 January 2008.
Revised on: 03 March 2008.
Accepted on: 19 March 2008.
NONLINEAR ANALYSIS-THEORY METHODS & APPLICATIONS
Submitted on: 25 October 2015.
Revised on: 25 November 2015.
Accepted on: 21 December 2015.
NONLINEAR ANALYSIS-THEORY METHODS & APPLICATIONS