Trịnh, D., Trương, S., Hứa, B. and Trần, P. 2023. Isolation and establishment of Physcion as a chemical reference substance from radix Polygonum multiflorum thunb. Science & Technology Development Journal: Natural Sciences. 7, 2 (May 2023), 2599-2607. DOI:https://doi.org/https://doi.org/10.32508/stdjns.v7i2.1235.