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\bibitem{Berdiyorov_etal2005} {\textquotedblleft}\textit{The structure and manipulation of vortex states in a superconducting square with 2 {\texttimes} 2 blind holes}{\textquotedblright}. Berdiyorov GR, Milo{\v s}evi{\'c} MV, Peeters FM, Journal of low temperature physics \textbf{139}, 229 (2005).   http://doi.org/10.1007/s10909-005-3926-z

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