Nguyen , H. L., Hoang , T. D. and Dang , T. T. H. (2026) “Petrovietnam’s capacity to participate in the clean hydrogen and ammonia value chain”, Petrovietnam Journal, 20, pp. 19-29. Available at: https://www.pvj.vn/index.php/TCDK/article/view/1200 (Accessed: 31October2026).