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Original work publishes in this journal is subject to the following terms:

1. Murcia University Press (the publishing house) holds the copyright of the publishes work, and favours and allows their reutilization under the use license stated in point 2.

© Servicio de Publicaciones, Universidad de Murcia, 2015

2.  Work is published in the electronic edition under a license (Creative Commons Reconocimiento-NoComercial-SinObraDerivada 4.0 España (legal text). They can be copied, used, disseminated, transmitted and publicly presented, as long as: i) authorship and original publication source is acknowledged (journal, publishing house and URL of the work); ii) are not used for commercial purposes; iii) the existence and specifications of this use license is stated.

3. Conditions for self-archive. Authors are allowed and encouraged to disseminate electronically the pre-pint (before review) and/or post-print (accepted for publication) versions of their work before their publication since that favours earlier circulation and dissemination resulting in an increased chance for the authors to be cited  and for the work to reach a bigger share of the academic community. Colour: RoMEO: green.