Repositorio Institucional de la Universidad de Oviedo

Citación:

Descripción física:

ISSN:

Patrocinado por:

The authors are grateful to the reviewers and Editor handling this paper, and to Prof. Maria Angeles Gil, for their insightful comments and suggestions. This research has been partially supported by the Spanish Ministry of Economy and Competitiveness Grant MTM2013-44212-P, the Principality of Asturias/FEDER Grants GRUPIN14-101 and GRUPIN14-005, COST Action IC1408, Grant C16/15/068 of International Funds KU Leuven and IAP research network grant nr. P7/06 of the Belgian government.