Funding for this research was provided by:
Ministerio de Economía, Industria y Competitividad, Gobierno de España (MAT2017-85130-P, BES-2015-074836)
Fundación Séneca (19877/GERM/15)
Article History
Received: 8 October 2018
Accepted: 19 January 2019
First Online: 28 January 2019