Meng, C.-Y. et al. 2013. Isolation of Chalcones from the Root of Codonopsis cordifolioidea and Their Antitobacco Mosaic Virus Activities. Asian Journal of Chemistry. 25, 17 (Nov. 2013), 9517–9519. DOI:https://doi.org/10.14233/ajchem.2013.15052A.