http://reply.papertrans.cn/2/104/10337/10337-11.png
http://reply.papertrans.cn/2/104/10337/10337-12.png
Submitted on: 08 February 2000.
Revised on: 22 March 2000.
Accepted on: 17 April 2000.
___________________Futures---ELSEVIER SCI LTD
Submitted on: 25 July 2017.
Revised on: 10 October 2017.
Accepted on: 23 October 2017.
___________________Futures---ELSEVIER SCI LTD
Submitted on: 30 August 2021.
Revised on: 03 November 2021.
Accepted on: 01 January 2022.
___________________Futures---ELSEVIER SCI LTD
http://reply.papertrans.cn/2/104/10337/10337-16.png
Submitted on: 16 February 2004.
Revised on: 01 June 2004.
Accepted on: 20 June 2004.
___________________Futures---ELSEVIER SCI LTD
http://reply.papertrans.cn/2/104/10337/10337-18.png
Submitted on: 07 March 2005.
Revised on: 23 May 2005.
Accepted on: 09 July 2005.
___________________Futures---ELSEVIER SCI LTD
Submitted on: 19 January 2013.
Revised on: 17 April 2013.
Accepted on: 02 June 2013.
___________________Futures---ELSEVIER SCI LTD