Nguyen, T., Nguyen, T., Nguyen, H., Nguyen, S., & Nguyen, P. (2009). OLEANANE SAPONINS FROM POLYSCIAS GUILFOYLEI BAIL. (ARALIACEAE). VNUHCM Journal of Science and Technology Development, 12(10), 21-28. https://doi.org/https://doi.org/10.32508/stdj.v12i10.2295