1. Maini, B.: Foamy oil flow in heavy oil production. J. Can. Pet. Technol. 35(6), 21–24 (1996)
2. Xingmin, L., Yin, Y.: Produced Gas Reinjection Based Cyclic Solvent Processes for Foamy Oil Reservoirs in the Eastern Orinoco Belt, Venezuela. Paper SPE-180730 presented at the SPE Canada Heavy Oil Technical Conference held in Calgary, Alberta, Canada, 7–9 June 2016
3. Yongbin, W., Xingmin, L.: Experimental Study on the Technical Feasibility of Secondary Foamy Oil. Paper WHOC16-148 presented at the 8th World Heavy Oil Congress held in Calgary, Canada, 12–14 October 2016
4. Xingmin, L., Yongbin, W., Xiaoxing, S., Zhaopeng, Y.: New approach to enhance extra-heavy oil recovery through recreation of foamy oil behavior. Paper IFEDC20194648 presented at the International Field Exploration and Development Conference held in Xi’an, China, 16–18 October 2019
5. Ivory, J.: Investigation of cyclic solvent injection process for heavy oil recovery. J. Can. Pet. Technol. 49(9), 22–33 (2010)