Funding for this research was provided by:
Gobierno de Aragón-FEDER (Grupo de Investigacion Consolidado T12, Grupo de Investigacion Consolidado T87)
MINECO-FEDER (MAT2017-82183-C3-1-R)
Universidad de Zaragoza (UZ2017-TEC-03)
Article History
Received: 26 March 2018
Revised: 7 June 2018
Accepted: 14 June 2018
First Online: 28 June 2018