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\bibitem{Sieger_etal2016} {\textquotedblleft}\textit{Ba$_{2}$Y(Nb/Ta)O$_{6}${\textendash}Doped YBCO Films on Biaxially Textured Ni{\textendash}5at.\% W Substrates}{\textquotedblright}. Sieger M, Pahlke P, Hanisch J, Sparing M, Bianchetti M, MacManus-Driscoll J, Lao M, Eisterer M, Meledin A, Van Tendeloo G, Nast R, Schultz L, Holzapfel B, Huhne R, IEEE transactions on applied superconductivity \textbf{26}, 1 (2016).   http://doi.org/10.1109/TASC.2016.2539254

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