Repositorio Institucional de la Universidad de Oviedo

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This work was supported by the Ministry of Education of Brazil (CAPES Foundation) (grant number N10066/12-8); the Spanish Ministry of Science and Innovation (grant number FPI-MICINN BES2012-057427); the Spanish Ministry of Economy and Competitiveness (grant numbers TIN2014-56633-C3-3-R, TIN2014-56633-C3-1-R, TIN-2014-56967-R, TIN2014-57458-R); and the “Consellería de Cultura, Educación e Ordenación Universitaria” (accreditation 2016-2019, ED431G/08) and the European Regional Development Fund(ERDF). The author A. Sanchez gratefully thanks the institutional support provided by the Prometeo Programme and the SENESCYT (Ecuador)