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\bibitem{Moldovan_etal2018} {\textquotedblleft}\textit{Magnetic field dependence of the atomic collapse state in graphene}{\textquotedblright}. Moldovan D, Masir MR, Peeters FM, 2D materials \textbf{5}, 015017 (2018).   http://doi.org/10.1088/2053-1583/AA9647

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