Submitted on: 13 July 2002.
Revised on: 03 November 2002.
Accepted on: 22 November 2002.
___________________Annual Review of Resource Economics
Submitted on: 05 July 2010.
Revised on: 25 September 2010.
Accepted on: 21 October 2010.
___________________Annual Review of Resource Economics
Submitted on: 06 October 2008.
Revised on: 13 November 2008.
Accepted on: 24 November 2008.
___________________Annual Review of Resource Economics
Submitted on: 30 January 2010.
Revised on: 24 May 2010.
Accepted on: 20 June 2010.
___________________Annual Review of Resource Economics
Submitted on: 20 May 2008.
Revised on: 27 July 2008.
Accepted on: 05 September 2008.
___________________Annual Review of Resource Economics
Submitted on: 03 July 1999.
Revised on: 24 October 1999.
Accepted on: 15 November 1999.
___________________Annual Review of Resource Economics