Submitted on: 12 December 2008.
Revised on: 20 March 2009.
Accepted on: 17 April 2009.
___________________ANNALS OF REGIONAL SCIENCE---SPRINGER
Submitted on: 13 March 2006.
Revised on: 09 April 2006.
Accepted on: 19 April 2006.
___________________ANNALS OF REGIONAL SCIENCE---SPRINGER
Submitted on: 03 October 2008.
Revised on: 29 October 2008.
Accepted on: 28 November 2008.
___________________ANNALS OF REGIONAL SCIENCE---SPRINGER
Submitted on: 30 August 2004.
Revised on: 24 December 2004.
Accepted on: 04 January 2005.
___________________ANNALS OF REGIONAL SCIENCE---SPRINGER
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Submitted on: 02 August 2019.
Revised on: 22 October 2019.
Accepted on: 09 December 2019.
___________________ANNALS OF REGIONAL SCIENCE---SPRINGER
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Submitted on: 07 September 2000.
Revised on: 08 November 2000.
Accepted on: 27 December 2000.
___________________ANNALS OF REGIONAL SCIENCE---SPRINGER
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