Sánchez-Vizuet, Tonatiuh http://orcid.org/0000-0002-8930-2798
Sayas, Francisco-Javier http://orcid.org/0000-0003-0321-2183
Funding for this research was provided by:
Directorate for Mathematical and Physical Sciences (1216356)
Article History
Received: 24 February 2016
Revised: 22 August 2016
Accepted: 30 August 2016
First Online: 13 September 2016