On-line identification of the antifungal constituents of Erythrina vogelii by liquid chromatography with tandem mass spectrometry, ultraviolet absorbance detection and nuclear magnetic resonance spectrometry combined with chromatographic micro-fractionation - Queiroz,E.F.; Wolfender,J.L.; Atindehou,K.K.; Traore,D.; Hostettmann,K. (J Chromatogr A, 2002)