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\bibitem{Croitoru_etal2005} {\textquotedblleft}\textit{Influence of the characteristics of the STM-tip on the electroluminescence spectra}{\textquotedblright}. Croitoru MD, Gladilin VN, Fomin VM, Devreese JT, Kemerink M, Koenraad PM, Sauthoff K, Wolter JH, Physica. E: Low-dimensional systems and nanostructures \textbf{27}, 13 (2005).   http://doi.org/10.1016/j.physe.2004.10.002

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