Submitted on: 20 July 2017.
Revised on: 07 August 2017.
Accepted on: 30 August 2017.
Metroeconomica---WILEY
Submitted on: 16 July 2005.
Revised on: 07 August 2005.
Accepted on: 17 August 2005.
Metroeconomica
Submitted on: 29 December 2019.
Revised on: 19 January 2020.
Accepted on: 28 January 2020.
Metroeconomica---WILEY
Submitted on: 26 July 2006.
Revised on: 04 September 2006.
Accepted on: 29 September 2006.
Metroeconomica---WILEY
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Submitted on: 24 March 1998.
Revised on: 18 April 1998.
Accepted on: 29 April 1998.
Metroeconomica
Submitted on: 22 April 2003.
Revised on: 03 May 2003.
Accepted on: 10 May 2003.
Metroeconomica---WILEY
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