Brown, J.
, Sharpless, K.
, Satterfield, M.
, Mitvalsky, S.
, Roman, M.
and Yen, J.
(2007),
Determination of Caffeine and Caffeine-Related Metabolites in Ephedra-Containing Standard Reference Materials Using Liquid Chromatography with Absorbance Detection and Tandem Mass Spectrometry, Journal of Aoac International
(Accessed December 7, 2024)