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\bibitem{Li_etal2017} {\textquotedblleft}\textit{Electric-and magnetic-field dependence of the electronic and optical properties of phosphorene quantum dots}{\textquotedblright}. Li LL, Moldovan D, Xu W, Peeters FM, Nanotechnology \textbf{28}, 085702 (2017).   http://doi.org/10.1088/1361-6528/AA55E8

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