Submitted on: 17 November 2009.
Revised on: 03 February 2010.
Accepted on: 11 March 2010.
___________________Italian Economic Journal---SPRINGER HEIDELBERG
Submitted on: 27 February 1998.
Revised on: 12 June 1998.
Accepted on: 15 July 1998.
___________________Italian Economic Journal---SPRINGER HEIDELBERG
Submitted on: 04 December 2018.
Revised on: 07 January 2019.
Accepted on: 03 February 2019.
___________________Italian Economic Journal---SPRINGER HEIDELBERG
Submitted on: 09 June 2001.
Revised on: 14 September 2001.
Accepted on: 28 October 2001.
___________________Italian Economic Journal---SPRINGER HEIDELBERG
Submitted on: 27 May 2021.
Revised on: 04 July 2021.
Accepted on: 17 July 2021.
___________________Italian Economic Journal---SPRINGER HEIDELBERG
Submitted on: 21 March 2004.
Revised on: 14 July 2004.
Accepted on: 28 August 2004.
___________________Italian Economic Journal---SPRINGER HEIDELBERG
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Submitted on: 20 June 2004.
Revised on: 10 August 2004.
Accepted on: 04 October 2004.
___________________Italian Economic Journal---SPRINGER HEIDELBERG