Open acces policy

This journal provides free and immediate access to its content under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported Licence. The aim of the journal is to make the research free available to the public, promoting a major exchange of global knowledge. Users are allowed to read, download, copy, distribute, print, search, or link to the full texts of the articles without asking prior permission from the publisher or the author. This is in accordance with the BOAI definition of open access.