You R-R, Chen X-Q, He D-D, Huang C-G, Jin Y, Qian S-H, Ju J-M, Fan J-T.  2017.  [Chemical constituents from petroleum ether fraction of Swertia chirayita and their activities in vitro]. Zhongguo Zhong Yao Za Zhi = Zhongguo Zhongyao Zazhi = China Journal of Chinese Materia Medica. 42(19):3764-3769.