Department of Accounting and Finance, University of Greenwich Business School, London, United Kingdom
Escola de Administracao, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil

Copyright © 2013 Cesario Mateus, Paulo Terra et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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