Truong Nhu Tung, Nguyen Huu Luong, Nguyen Phu Quy Anh and Nguyen Thanh Sang 2020. Improving energy efficiency in refineries. Petrovietnam Journal. 5, (May 2020), 37 - 42. DOI:https://doi.org/10.25073/petrovietnam journal.v5i0.308.