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\bibitem{Grubova_etal2019} {\textquotedblleft}\textit{Effects of silicon doping on strengthening adhesion at the interface of the hydroxyapatite-titanium biocomposite : a first-principles study}{\textquotedblright}. Grubova IY, Surmeneva MA, Huygh S, Surmenev RA, Neyts EC, Computational materials science \textbf{159}, 228 (2019).   http://doi.org/10.1016/J.COMMATSCI.2018.12.026

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