SON, L. T.; PHUONG, T. T.; AN, V.; SON, T. H.; MINH, T. Q.; HIEU, P. T.; HIEP, C. H.; DOAN, V. N. Study on manufacturing demulsifier to separate water from crude oil to ensure quality requirements during production operations. Petrovietnam Journal, v. 12, p. 32-43, 31 Dec. 2014.