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\bibitem{Jenett_etal1991} {\textquotedblleft}\textit{Comparative bulk, surface and depth profile analyses on AIN and SiC-coated B$_{4}$C powders}{\textquotedblright}. Jenett H, Grallath E, Riedel R, Strecker K, Gijbels R, Kennis P, Fres J. Anal. Chem. \textbf{341}, 265 (1991)

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