Ngai, Nguyen Dang, Dau Van Thao, Do Cong Thung, Le Thi Thuy, Pham Van Luong, Cao Thu Trang, Vu Thi Luu, Dam Duc Tien, Nguyen Van Quan, and Pham Van Chien. 2016. “NEW DATA ON WATER ENVIRONMENT AND ORGANISM IN SUBMERGED CAVES AND SALTWATER LAKES IN HA LONG AND CAT BA AREAS”. Vietnam Journal of Marine Science and Technology 16 (2):167-75. https://doi.org/10.15625/1859-3097/16/2/7341.