Submitted on: 20 November 1999.
Revised on: 13 January 2000.
Accepted on: 01 February 2000.
___________________BULLETIN OF INDONESIAN ECONOMIC STUDIES
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Submitted on: 10 August 2004.
Revised on: 12 September 2004.
Accepted on: 20 October 2004.
___________________BULLETIN OF INDONESIAN ECONOMIC STUDIES
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