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\bibitem{Kerner_etal2009} {\textquotedblleft}\textit{Control and readout of current-induced magnetic flux quantization in a superconducting transformer}{\textquotedblright}. Kerner C, Hackens B, Golubovi{\'c} DS, Poli S, Faniel S, Magnus W, Schoenmaker W, Bayot V, Maes H, Superconductor science and technology \textbf{22}, 025001 (2009).   http://doi.org/10.1088/0953-2048/22/2/025001

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