Nael N. Zaki Sullivan, A. P., Zaki, N. N., Sjoblom, J., & Kilpatrick, P. K. (2007). The stability of water-in-crude and model oil emulsions. Canadian Journal of Chemical Engineering, 85(6), 793–807. Zaki, N. N., Carbonell, R. G., & Kilpatrick, P. K. (2003). A novel process for demulsification of water-in-crude oil emulsions by dense carbon dioxide. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 42(25), 6661–6672. https://doi.org/10.1021/ie0303597 Zaki, N. N., Kilpatrick, P. K., & Carbonell, R. G. (2003). Methods of demulsifying emulsions using carbon dioxide. Washington, DC: U.S. Patent and Trademark Office. Poindexter, M. K., Zaki, N. N., Kilpatrick, P. K., Marsh, S. C., & Emmons, D. H. (2002). Factors contributing to petroleum foaming. 1. Crude oil systems. ENERGY & FUELS, 16(3), 700–710. https://doi.org/10.1021/ef010224i Zaki, N. N., Poindexter, M. K., & Kilpatrick, P. K. (2002). Factors contributing to petroleum foaming. 2. Synthetic crude oil systems. ENERGY & FUELS, 16(3), 711–717. https://doi.org/10.1021/ef010225a Zaki, N., Butz, T., & Kessel, D. (2001). Rheology, particle size distribution, and asphaltene deposition of viscous asphaltic crude oil-in-water emulsions for pipeline transportation. PETROLEUM SCIENCE AND TECHNOLOGY, 19(3-4), 425–435. https://doi.org/10.1081/LFT-100000774 Zaki, N., Schorling, P. C., & Rahimian, I. (2000). Effect of asphaltene and resins on the stability of water-in-waxy oil emulsions. PETROLEUM SCIENCE AND TECHNOLOGY, 18(7-8), 945–963. https://doi.org/10.1080/10916460008949884 Zaki, N. N., Maysour, N. E. S., & Abdel-Azim, A. A. A. (2000). Polyoxyalkylenated amines for breaking of water-in-oil emulsions stabilized by asphaltenes and clay. PETROLEUM SCIENCE AND TECHNOLOGY, 18(9-10), 1009–1025. https://doi.org/10.1080/10916460008949888 Zaki, N. N., Ahmed, N. S., & Nassar, A. M. (2000). Sodium lignin sulfonate to stabilize heavy crude oil-in-water emulsions for pipeline transportation. PETROLEUM SCIENCE AND TECHNOLOGY, 18(9-10), 1175–1193. https://doi.org/10.1080/10916460008949898 Ahmed, N. S., Nassar, A. M., Zaki, N. N., & Gharieb, K. H. (1999). Stability and rheology of heavy crude oil-in-water emulsion stabilized by an anionic-nonionic surfactant mixture. PETROLEUM SCIENCE AND TECHNOLOGY, 17(5-6), 553–576. https://doi.org/10.1080/10916469908949734 Abdel-Azim, A. A. A., Zaki, N. N., & Maysour, N. E. S. (1998). Polyoxyalkylenated amines for breaking water-in-oil emulsions: Effect of structural variations on the demulsification efficiency. POLYMERS FOR ADVANCED TECHNOLOGIES, 9(2), 159–166. https://doi.org/10.1002/(SICI)1099-1581(199802)9:2<159::AID-PAT757>3.0.CO;2-K AlSabagh, A. M., Zaki, N. N., & Badawi, A. F. M. (1997). Effect of binary surfactant mixtures on the stability of asphalt emulsions. JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY, 69(3), 350–356. https://doi.org/10.1002/(SICI)1097-4660(199707)69:3<350::AID-JCTB699>3.0.CO;2-7 Zaki, N. N., & Al-Sabagh, A. M. (1997). The efficiency of polyalkyl phenols polyalkylenepolyamines formaldehyde ethoxylates as demulsifiers for water-in-crude oil emulsions. Tenside, Surfactants, Detergents, 34(1), 12–17. Zaki, N. N., Kilpatrick, P. K., & Carbonell, R. G. Methods of deresinating crude oils using carbon dioxide.