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\bibitem{Verbist_etal1997} {\textquotedblleft}\textit{Ga segregation in DyBa$_{2}$Cu$_{3}$O$_{7-\delta}$/PrBa$_{2}$Cu$_{3-x}$Ga$_{x}$O$_{7-\delta}$/DyBa$_{2}$Cu$_{3}$O$_{7-\delta}$ ramp-type Josephson junctions}{\textquotedblright}. Verbist K, Lebedev OI, Van Tendeloo G, Verhoeven MAJ, Rijnders AJHM, Blank DHA, Rogalia H, Applied physics letters \textbf{70}, 1167 (1997)

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