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\bibitem{Opherden_etal2016} {\textquotedblleft}\textit{Large pinning forces and matching effects in YBa2Cu3O7-δ thin films with Ba2Y(Nb/Ta)O6 nano-precipitates}{\textquotedblright}. Opherden L, Sieger M, Pahlke P, H{\"u}hne R, Schultz L, Meledin A, Van Tendeloo G, Nast R, Holzapfel B, Bianchetti M, MacManus-Driscoll JL, H{\"a}nisch J, Scientific reports \textbf{6}, 21188 (2016).   http://doi.org/10.1038/srep21188

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