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\bibitem{Xu_etal2005} {\textquotedblleft}\textit{Phase assembly and microstructure of CeO$_{2}$-doped ZrO$_{2}$ ceramics prepared by spark plasma sintering}{\textquotedblright}. Xu T, Wang P, Fang P, Kan Y, Chen L, Vleugels J, Van der Biest O, van Landuyt J, Journal of the European Ceramic Society \textbf{25}, 3437 (2005).   http://doi.org/10.1016/j.jeurceramsoc.2004.09.004

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