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\bibitem{Dhong_etal2009} {\textquotedblleft}\textit{Optical conductance and transmission in bilayer graphene}{\textquotedblright}. Dhong HM, Zhang J, Peeters FM, Xu W, Journal of applied physics \textbf{106}, 043103 (2009).   http://doi.org/10.1063/1.3200959

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