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\bibitem{Janyavula_etal2013} {\textquotedblleft}\textit{The wear of polished and glazed zirconia against enamel}{\textquotedblright}. Janyavula S, Lawson N, {\c C}akir D, Beck P, Ramp LC, Burgess JO, Journal Of Prosthetic Dentistry \textbf{109}, 22 (2013).   http://doi.org/10.1016/S0022-3913(13)60005-0

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