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Smith, A.G.; Joannou, G.E.; Mák, M.; Uwajima, T.; Terada, O.; Brooks, C.J.W., Oxidation of 3«beta»-hydroxyandrostenes by the 3«beta»-hydroxysteroid oxidase (cholesterol oxidase) from Brevibacterium sterolicum prior to their analysis by gas-liquid chromatography-mass spectrometry, J. Chromatogr., 1978, 152, 2, 467-474, https://doi.org/10.1016/S0021-9673(00)85083-9 . [all data]