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\bibitem{Yan_etal2014} {\textquotedblleft}\textit{Topological surface state enhanced photothermoelectric effect in Bi$_{2}$Se$_{3}$ nanoribbons}{\textquotedblright}.  Yan Y, Liao ZM, Ke X, Van Tendeloo G, Wang Q, Sun D, Yao W, Zhou S, Zhang L, Wu HC, Yu DP;, Nano letters \textbf{14}, 4389 (2014).   http://doi.org/10.1021/nl501276e

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