Frechero, M. A.
Rocci, M.
Sánchez-Santolino, G.
Kumar, Amit
Salafranca, J.
Schmidt, Rainer
Díaz-Guillén, M. R.
Durá, O. J.
Rivera-Calzada, A.
Mishra, R.
Jesse, Stephen
Pantelides, S. T.
Kalinin, Sergei V.
Varela, M.
Pennycook, S. J.
Santamaria, J.
Leon, C.
Article History
Received: 16 February 2015
Accepted: 27 October 2015
First Online: 17 December 2015
Competing interests
: The authors declare no competing financial interests.