Yan, Y. (2011) “Variation of Triterpenoid Saponin Content in Platycodon grandiflorum (Jacq.) A.D.C”., Asian Journal of Chemistry, 24(3), pp. 1268–1270. Available at: https://asianpubs.org/index.php/ajchem/article/view/8755 (Accessed: 2 July 2024).