Title: Sawai S, et al. Molecular characterization of an oxidosqualene cyclase that yields shionone, a unique tetracyclic triterpene ketone of Aster tataricus.FEBS Lett. 2011 Apr 6;585(7):1031-6.
Title: Yu P, et al. Expectorant, antitussive, anti-inflammatory activities and compositional analysis of Aster tataricus.J Ethnopharmacol. 2015 Apr 22;164:328-33.