Funding for this research was provided by:
Romanian National Authority for Scientific Research, CNCS - UEFISCDI (PN-II-ID-PCE-2011- 3-0383, PN-II-ID-PCE-2011- 3-0383)
DGES (MTM2015-65242-C2-1-P)
Juan de la Cierva - Incorporaci’ on Fellowship Program of the Spanish Ministry of Economy and Competitiveness
Article History
Received: 8 December 2017
Accepted: 12 April 2018
First Online: 19 April 2018