Submitted on: 26 June 2004.
Revised on: 27 August 2004.
Accepted on: 23 October 2004.
___________________Journal of Commodity Markets---ELSEVIER
Submitted on: 06 September 2011.
Revised on: 19 December 2011.
Accepted on: 20 January 2012.
___________________Journal of Commodity Markets---ELSEVIER
Submitted on: 31 March 2008.
Revised on: 20 May 2008.
Accepted on: 28 June 2008.
___________________Journal of Commodity Markets---ELSEVIER
Submitted on: 02 February 1998.
Revised on: 22 May 1998.
Accepted on: 08 June 1998.
___________________Journal of Commodity Markets---ELSEVIER
Submitted on: 22 October 1998.
Revised on: 25 November 1998.
Accepted on: 11 January 1999.
___________________Journal of Commodity Markets---ELSEVIER
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http://reply.papertrans.cn/2/160/15987/15987-17.png
Submitted on: 06 December 2023.
Revised on: 19 February 2024.
Accepted on: 17 April 2024.
___________________Journal of Commodity Markets---ELSEVIER
Submitted on: 08 November 1998.
Revised on: 04 February 1999.
Accepted on: 17 February 1999.
___________________Journal of Commodity Markets---ELSEVIER
Submitted on: 09 October 2019.
Revised on: 28 December 2019.
Accepted on: 23 February 2020.
___________________Journal of Commodity Markets---ELSEVIER