Submitted on: 08 November 1998.
Revised on: 05 January 1999.
Accepted on: 05 March 1999.
___________________Journal of Nonlinear Functional Analysis
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Submitted on: 03 March 2008.
Revised on: 13 June 2008.
Accepted on: 06 July 2008.
___________________Journal of Nonlinear Functional Analysis
Submitted on: 03 June 2010.
Revised on: 27 July 2010.
Accepted on: 26 August 2010.
___________________Journal of Nonlinear Functional Analysis
Submitted on: 18 June 2016.
Revised on: 20 September 2016.
Accepted on: 18 October 2016.
___________________Journal of Nonlinear Functional Analysis
Submitted on: 07 December 2005.
Revised on: 12 February 2006.
Accepted on: 28 March 2006.
___________________Journal of Nonlinear Functional Analysis
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Submitted on: 19 January 2024.
Revised on: 29 March 2024.
Accepted on: 08 April 2024.
___________________Journal of Nonlinear Functional Analysis