Nguyen Huynh Anh, Nguyen Ba Khoa, Nguyen Hien Phong, Nguyen Phan Tri, Ngo Thi Loan, Nguyen Thanh Tung, and Nguyen Van Hung. “Research and Build a Testing Equipment System for Determining Paraffin Deposition Rate of Crude Oil (cold Finger)”. Petrovietnam Journal 20 (February 26, 2021): 41 - 50. Accessed April 30, 2026. http://www.pvj.com.vn/index.php/TCDK/article/view/404.