^A new approach for simultaneous screening and quantification of toxic pyrrolizidine alkaloids in some potential pyrrolizidine alkaloid-containing plants by using ultra performance liquid chromatography–tandem quadrupole mass spectrometry. Yan Zhou, Na Li, Franky Fung-Kei Choi, Chun-Feng Qiao, Jing-Zheng Song, Song-Lin Li, Xin Liu, Zong-Wei Cai, Peter P. Fu, Ge Lin and Hong-Xi Xu, Analytica Chimica Acta, Volume 681, Issues 1–2, 29 November 2010, Pages 33–40, doi:10.1016/j.aca.2010.09.011
