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This journal provides public access to its entire content, following the principle that providing free access to research generates a greater global knowledge exchange. This access is associated to a growth in the reading and quotation of the works of an author. For further information regarding this approach, please access the Public Knowledge Project, the project that developed this system to improve the academic and public quality of research, distributing the Open Journal Systems (http://pkp.sfu.ca/about) and other support software to the publication system for the public access to academic sources.