1. Yan-dong Yu, Special Oil & Gas Reservoirs, 8, No. 2, 98-103 (2001).
2. Ying Ren and Jin-guo Wang, Theory and Practice of the Thermal Recovery of the Heavy Oil and High-Pour Point Oil, Petroleum Industry Press, Beijing (2001).
3. Jianping Sun, Qiquan Ran, and Huandian Shi, Petroleum Geology and Recovery Efficiency, 12, No. 1, 59-62 (2005).
4. J. Bryan and A. Kantzas, “Enhanced heavy-oil recovery by alkali-surfactant flooding,” in: SPE Annual Technical Conference and Exhibition, Anaheim, California USA, 11-14 November 2007; SPE 110738.
5. Fusheng Zhang, Huizhuan Xie, and Lijian Dong, Specialty Petrochemicals, 6, 28-30 (1999)