Submitted on: 03 April 2005.
Revised on: 28 July 2005.
Accepted on: 24 August 2005.
___________________GFF---TAYLOR & FRANCIS LTD
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Submitted on: 13 February 1998.
Revised on: 24 April 1998.
Accepted on: 04 June 1998.
___________________GFF---TAYLOR & FRANCIS LTD
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Submitted on: 23 February 2010.
Revised on: 06 April 2010.
Accepted on: 19 May 2010.
___________________GFF---TAYLOR & FRANCIS LTD
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Submitted on: 01 January 2006.
Revised on: 23 March 2006.
Accepted on: 27 April 2006.
___________________GFF---TAYLOR & FRANCIS LTD
Submitted on: 15 October 2002.
Revised on: 17 December 2002.
Accepted on: 23 January 2003.
___________________GFF---TAYLOR & FRANCIS LTD