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\bibitem{Vavra_etal2006} {\textquotedblleft}\textit{0 and π phase Josephson coupling through an insulating barrier with magnetic impurities}{\textquotedblright}. V{\'a}vra O, Ga{\v z}i S, Golubovi{\'c} DS, V{\'a}vra I, D{\'e}rer J, Verbeeck J, Van Tendeloo G, Moshchalkov VV, Physical review : B : condensed matter and materials physics \textbf{74}, 020502 (2006).   http://doi.org/10.1103/PhysRevB.74.020502

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