PHAN NGOC, T.; NGUYEN THI THANH, L.; HOANG THI, P.; NGUYEN THI THUY, D.; PHAM KIEU, Q.; NGUYEN THI THU, P.; PHUNG LE, M.; TRAN THI MINH, A.; NGUYEN NGOC, T. Risk identification in petroleum upstream projects. Petrovietnam Journal, v. 8, p. 37-49, 30 Aug. 2019.