Acest proiect de cercetare este sprijinit printr-un grant al Ministerului Educației, CNCS - UEFISCDI, proiect nr. PN-II-ID-JRP-RO-FR-2012-0137.

This research project is supported by a grant of the Romanian Ministry of Education, CNCS-UEFISCDI, project number PN-II-ID-JRP-RO-FR-2012-0137.

Ce projet de recherche est financé par le Ministère de l'Éducation, CNCS - UEFISCDI, projet no. PN-II-ID-JRP-RO-FR-2012-0137.