T. Ruksilp, N. Wongpriaw, T. Thammasom, N. Srichana, and W. Isaro, “Antioxidant Activities of Triterpenoids and Steroid from the Roots of Millettia utilis Dunn”, Asian Health Sci.Tech.Rep., vol. 30, no. 3, pp. 44–50, Oct. 2021.