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\bibitem{Leusink_etal2014} {\textquotedblleft}\textit{Thin films of the spin ice compound Ho$_{2}$Ti$_{2}$O$_{7}$}{\textquotedblright}. Leusink DP, Coneri F, Hoek M, Turner S, Idrissi H, Van Tendeloo G, Hilgenkamp H, APL materials \textbf{2}, 032101 (2014).   http://doi.org/10.1063/1.4867222

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