Submitted on: 12 May 1998.
Revised on: 02 June 1998.
Accepted on: 16 July 1998.
___________________Gospodarka Narodowa-The Polish Journal of Economics
Submitted on: 26 May 2008.
Revised on: 16 August 2008.
Accepted on: 24 September 2008.
___________________Gospodarka Narodowa-The Polish Journal of Economics
Submitted on: 13 June 2019.
Revised on: 24 July 2019.
Accepted on: 11 August 2019.
___________________Gospodarka Narodowa-The Polish Journal of Economics
Submitted on: 20 February 2013.
Revised on: 20 April 2013.
Accepted on: 27 May 2013.
___________________Gospodarka Narodowa-The Polish Journal of Economics
Submitted on: 15 September 2009.
Revised on: 19 October 2009.
Accepted on: 13 December 2009.
___________________Gospodarka Narodowa-The Polish Journal of Economics
Submitted on: 20 May 2007.
Revised on: 24 July 2007.
Accepted on: 11 August 2007.
___________________Gospodarka Narodowa-The Polish Journal of Economics
Submitted on: 21 May 2008.
Revised on: 30 August 2008.
Accepted on: 19 October 2008.
___________________Gospodarka Narodowa-The Polish Journal of Economics
Submitted on: 19 December 2010.
Revised on: 15 March 2011.
Accepted on: 29 April 2011.
___________________Gospodarka Narodowa-The Polish Journal of Economics
http://reply.papertrans.cn/2/109/10893/10893-29.png
Submitted on: 07 July 1998.
Revised on: 02 August 1998.
Accepted on: 28 August 1998.
___________________Gospodarka Narodowa-The Polish Journal of Economics