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Submitted on: 15 July 2011.
Revised on: 13 August 2011.
Accepted on: 21 August 2011.
RAE-Revista de Administracao de Empresas
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Submitted on: 17 January 2002.
Revised on: 01 February 2002.
Accepted on: 08 February 2002.
RAE-Revista de Administracao de Empresas
Submitted on: 30 April 2006.
Revised on: 06 June 2006.
Accepted on: 23 June 2006.
RAE-Revista de Administracao de Empresas
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Submitted on: 15 November 2006.
Revised on: 23 December 2006.
Accepted on: 17 January 2007.
RAE-Revista de Administracao de Empresas