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\bibitem{Andrikopoulos_etal2016} {\textquotedblleft}\textit{Skyrmion-induced bound states on the surface of three-dimensional topological insulators}{\textquotedblright}. Andrikopoulos D, Sor{\'e}e B, De Boeck J, Journal of applied physics \textbf{119}, 193903 (2016).   http://doi.org/10.1063/1.4950759

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