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\bibitem{Xu_etal2010} {\textquotedblleft}\textit{Optoelectronic properties of graphene in the presence of optical phonon scattering}{\textquotedblright}. Xu W, Dong HM, Li LL, Yao JQ, Vasilopoulos P, Peeters FM, Physical review : B : condensed matter and materials physics \textbf{82}, 125304 (2010).   http://doi.org/10.1103/PhysRevB.82.125304

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