Tuan Phuong, Phan, Phan Thi Lan Anh, Nguyen Xuan Nhiem, Nguyen Thi Kim Thuy, and Phan Van Kiem. 2020. “Polyhydroxypregnane Glycosides from Dregea Volubilis”. <i>Vietnam Journal of Science and Technology</i> 58 (4). Hanoi, VN:426-33. https://doi.org/10.15625/2525-2518/58/4/14818.