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Muschik, G.M.; Wright, L.H.; Schroer, J.A., The Identification of Bile Acid Methyl Esters by Gas Chromatography Methane Chemical Ionization Mass Spectrometry, Biomed. Mass Spectrom., 1979, 6, 6, 266-270, https://doi.org/10.1002/bms.1200060608 . [all data]