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\bibitem{Batuk_etal2017} {\textquotedblleft}\textit{Effect of cation vacancies on the crystal structure and luminescent properties of Ca(0.85-1.5x)Gd(x)Eu(0.1)_(0.05+0.5x)WO(4) (0<x<0.567) scheelite-based red phosphors}{\textquotedblright}. Batuk D, Batuk M, Morozov VA, Meert KW, Smet PF, Poelman D, Abakumov AM, Hadermann J, Journal of alloys and compounds \textbf{706}, 358 (2017).   http://doi.org/10.1016/j.jallcom.2017.02.154

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