X. Li, Shen, et al. “LC-MS/MS/Method/for/Simultaneous/Determination/of/Pteryxin/and/Bergapten/in/Rat/Plasma/for/Pharmacokinetic/Study”. Asian Journal of Chemistry, vol. 24, no. 10, May 2012, pp. 4300-4, https://asianpubs.org/index.php/ajchem/article/view/9641.