Rindzevicius, T., Alaverdyan, Y., Sepulveda, B., Pakizeh, T., Kall, M., Hillenbrand, R., Aizpurua, J., & de Abajo, F. J. G. (2007). Nanohole plasmons in optically thin gold films. Journal of Physical Chemistry C, 111(3), 1207-1212.