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Submitted on: 31 May 2011.
Revised on: 25 August 2011.
Accepted on: 05 October 2011.
___________________Journal of Demographic Economics
Submitted on: 17 November 2017.
Revised on: 08 January 2018.
Accepted on: 11 February 2018.
___________________Journal of Demographic Economics
Submitted on: 27 October 2011.
Revised on: 17 November 2011.
Accepted on: 12 December 2011.
___________________Journal of Demographic Economics
Submitted on: 04 March 2019.
Revised on: 09 April 2019.
Accepted on: 09 May 2019.
___________________Journal of Demographic Economics