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\bibitem{Alda_etal2005} Alda, J., Rico-Garc{\'\i}a, J. M., L{\'o}pez-Alonso, J. M., \& Boreman, G. (2005). Optical antennas for nano-photonic applications. \textit{Nanotech.}, \textit{16}(5), S230--S234.

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