Funding for this research was provided by:
Erasmus Mundus Joint Doctorate SEED project (European Commission, 2013-1436/001-001-EMJD)
Fundação para a Ciência e a Tecnologia (FCT) (UID/ECI/04625/2013)
Ministerio de Economía y Competitividad (DAFOH2 project (MTM2013-46313-R))
Article History
Received: 1 August 2017
Revised: 10 May 2018
Accepted: 15 June 2018
First Online: 5 July 2018