Nghi, Tran, 		Nam, Le, 		Bui Din, Dao, 		Thanh, Dinh, 		Hoa Phuong, Ta, 		Van Bao, Dang, AND 		Trang, Nguyne.
" Geological History of Caves and Conservation Values  of the World Nature Heritage Phong Nha-Ke Bang  National Park" <em>VNU Journal of Science: Earth and Environmental Sciences</em> [Online], Volume 39 Number 4 (29 December 2023)