Tung, Hoang Thanh, and Trinh Van Lam. 2015. “Effective Solutions and Lessons Learnt from Using Tender Assisted Drilling Rig (TAD) for Drilling on Deepwater Fixed Platform of Bien Dong 1 Project”. Petrovietnam Journal 1 (January), 68-77. https://pvj.vn/index.php/TCDK/article/view/437.