Just, Winfried
Saldaña, Joan
Xin, Ying
Funding for this research was provided by:
Ministerio de Economía y Competitividad (MTM2014-52402-C3-3-P)
Universitat de Girona (MPCUdG2016/047)
Article History
Received: 28 June 2016
Revised: 16 July 2017
First Online: 28 July 2017
Free to read: This content has been made available to all.