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\bibitem{Milovanovic_etal2013} {\textquotedblleft}\textit{Spectroscopy of snake states using a graphene Hall bar}{\textquotedblright}. Milovanovi{\'c} SP, Masir MR, Peeters FM, Applied physics letters \textbf{103}, 233502 (2013).   http://doi.org/10.1063/1.4838557

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