Submitted on: 30 June 2014.
Revised on: 16 August 2014.
Accepted on: 02 October 2014.
___________________Journal of Cosmology and Astroparticle Physics
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Submitted on: 17 January 2002.
Revised on: 23 April 2002.
Accepted on: 18 June 2002.
___________________Journal of Cosmology and Astroparticle Physics
Submitted on: 19 March 2014.
Revised on: 23 May 2014.
Accepted on: 24 June 2014.
___________________Journal of Cosmology and Astroparticle Physics
Submitted on: 03 October 2009.
Revised on: 01 December 2009.
Accepted on: 25 December 2009.
___________________Journal of Cosmology and Astroparticle Physics
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