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\bibitem{Jochum_etal2000} {\textquotedblleft}\textit{The preparation and preliminary characterisation of eight geological MPI-DING reference glasses for in-site microanalysis}{\textquotedblright}. Jochum KP, Dingwell DB, Rocholl A, Janssens K, Vincze L, et al, Geostandards newsletter \textbf{24}, 87 (2000).   http://doi.org/10.1111/J.1751-908X.2000.TB00590.X

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