Vo Thi, Mong Tham, Son Hai Phan, Van Phuc Nguyen, Minh Dao Nguyen, Quang Trung Phan, Xuan Thang Le, and Huong Lan Nguyen Thi. “Using a Delayed Coincidence Counting System to Determine ²²³Ra, ²²⁴Ra in Seawater Sample”. Nuclear Science and Technology 8, no. 3 (September 30, 2018): 29-35. Accessed November 28, 2024. http://jnst.vn/index.php/nst/article/view/71.