Tran Quang Dan, Ho Thi My, Vo Chau Tuan, and Dam Minh Anh. “IN VITRO PROPAGATION OF A RARE AND ENDANGERED ORCHID SPECIES Hygrochilus Parishii Pfitz”. UED Journal of Social Sciences, Humanities and Education, Vol. 9, no. 5, Dec. 2019, pp. 9-14, https://jshe.vn/index.php/jshe/article/view/94.