Submitted on: 28 January 2016.
Revised on: 21 February 2016.
Accepted on: 26 March 2016.
___________________Journal of Fixed Point Theory and Applications
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Submitted on: 20 July 2011.
Revised on: 20 August 2011.
Accepted on: 10 October 2011.
___________________Journal of Fixed Point Theory and Applications
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Submitted on: 25 June 2016.
Revised on: 06 September 2016.
Accepted on: 09 October 2016.
___________________Journal of Fixed Point Theory and Applications
Submitted on: 10 May 2015.
Revised on: 21 July 2015.
Accepted on: 05 August 2015.
___________________Journal of Fixed Point Theory and Applications