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Submitted on: 01 August 2017.
Revised on: 20 November 2017.
Accepted on: 04 January 2018.
___________________GFF---TAYLOR & FRANCIS LTD
Submitted on: 26 June 2006.
Revised on: 24 July 2006.
Accepted on: 16 August 2006.
___________________GFF---TAYLOR & FRANCIS LTD
Submitted on: 14 March 2006.
Revised on: 30 June 2006.
Accepted on: 31 July 2006.
___________________GFF---TAYLOR & FRANCIS LTD
Submitted on: 07 June 2008.
Revised on: 27 July 2008.
Accepted on: 06 August 2008.
___________________GFF---TAYLOR & FRANCIS LTD
Submitted on: 24 January 1999.
Revised on: 20 April 1999.
Accepted on: 01 June 1999.
___________________GFF---TAYLOR & FRANCIS LTD
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