Submitted on: 22 October 2001.
Revised on: 04 February 2002.
Accepted on: 30 March 2002.
___________________Global Trade and Customs Journal
Submitted on: 02 September 2016.
Revised on: 06 December 2016.
Accepted on: 25 December 2016.
___________________Global Trade and Customs Journal
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Submitted on: 19 January 2023.
Revised on: 18 April 2023.
Accepted on: 09 May 2023.
___________________Global Trade and Customs Journal
Submitted on: 30 October 2017.
Revised on: 06 February 2018.
Accepted on: 23 March 2018.
___________________Global Trade and Customs Journal
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