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\bibitem{VanDuppen+Peeters2012} {\textquotedblleft}\textit{Comment on {\textquotedblleft}Chiral tunneling in trilayer graphene{\textquotedblright} [Appl. Phys. Lett. 100, 163102 (2012)]}{\textquotedblright}. Van Duppen B, Peeters FM, Applied physics letters \textbf{101}, 226101 (2012).   http://doi.org/10.1063/1.4767221

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