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\bibitem{Wang_etal2008} {\textquotedblleft}\textit{Crosshatching on La$_{0.5}$Ca$_{0.5}$MnO$_{3}$ ultrathin films epitaxially grown on SrTiO$_{3}$(100)}{\textquotedblright}. Wang Z-H, Lebedev OI, Van Tendeloo G, Cristiani G, Habermeier H-U, Physical review : B : condensed matter and materials physics \textbf{77}, 1 (2008).   http://doi.org/10.1103/PhysRevB.77.115330

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