@article{article78976cb5,
title   = {Simultaneous analysis of the enantiomers of verapamil and norverapamil in rat plasma by liquid chromatography-tandem mass spectrometry},
author = {Mateus, Fabiano Henrique and Lepera, José Salvador and Marques, Maria Paula and Boralli, Vanessa Bergamin and Lanchote, Vera Lúcia},
year = {2007},
doi = {10.1016/j.jpba.2007.09.021},
journal   = {Journal of Pharmaceutical and Biomedical}
}