1. Sperling D, Gordon D. Two Billion Cars: Driving Towards Sustainability. Oxford, England, UK: Oxford University Press; 2009. p. 130
2. Huc AY. Heavy Crude Oils: From Geology to Upgrading: An Overview. Paris, France: Editions Technip; 2011
3. He L, Lin F, Li X, Sui H, Xu Z. Interfacial sciences in unconventional petroleum production: From fundamentals to applications. Chemical Society Reviews. 2015;44:5446-5494
4. Guo K, Li H, Yu Z. In-situ heavy and extra-heavy oil recovery: A review. Fuel. 2016;185:886-902
5. Palou RM, Mosqueira ML, Rendón BZ, Juárez EM, Huicochea CB, Clavel-López JC, et al. Transportation of heavy and extra-heavy crude oil by pipeline: A review. Journal of Petroleum Science and Engineering. 2011;75:274-282