Journal of Physical Chemistry C, 115-14:6849 – 6854, 2011 doi:10.1021/jp200533a
González-Moreno Rubén, Sánchez-Sánchez Carlos, Trelka Marta, Otero Roberto, Cossaro Albano, Verdini Alberto, Floreano Luca, Ruiz-Bermejo Marta, García-Lekue Aran, Martín-Gago José Ángel, Rogero Celia