Submitted on: 04 September 2013.
Revised on: 16 November 2013.
Accepted on: 07 December 2013.
___________________European Management Journal---ELSEVIER SCI LTD
Submitted on: 11 July 2010.
Revised on: 06 October 2010.
Accepted on: 28 November 2010.
___________________European Management Journal---ELSEVIER SCI LTD
Submitted on: 23 June 2007.
Revised on: 25 July 2007.
Accepted on: 24 August 2007.
___________________European Management Journal---ELSEVIER SCI LTD
Submitted on: 29 October 2001.
Revised on: 19 February 2002.
Accepted on: 24 March 2002.
___________________European Management Journal---ELSEVIER SCI LTD
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