Analysis of furo[3,2‐ <i>c</i> ]tetrahydroquinoline and pyrano[3,2‐ <i>c</i> ]tetrahydroquinoline derivatives as antitumor agents and their metabolites by liquid chromatography/electrospray ionization tandem mass spectrometryXueyan Hou, Rui Li, Hao Zhong et al.|Rapid Communications in Mass Spectrometry|2013Cited by 7