Ngoan, Bui Thi, Tran Thi Hong Hanh, Le Thi Vien, Chau Ngoc Diep, Nguyen Phuong Thao, Nguyen Van Thanh, Nguyen Xuan Cuong, et al. “A Polyhydroxylated Sterol and a Saponin Isolated from the Starfish Culcita Novaeguineae”. <i>Vietnam Journal of Chemistry</i> 53, no. 2e (May 21, 2015): 23–27. Accessed December 6, 2025. https://vjs.ac.vn/vjchem/article/view/0866-7144.2015-2e-006.