1. H.Y. Sohn, Continuous Solvent Extraction with Bottom Gas Injection, U.S. Patent No. 5 641 462, June 24, 1997.
2. Measurement and correlation of drop-size distribution in liquid–liquid emulsions formed by high-velocity bottom-gas injection;Zaidi;ISIJ International,1995
3. Dispersed-phase holdup in liquid–liquid emulsions generated by high-strength bottom gas injection;Lee;Metall. Mater. Trans. B,1996
4. K. Iyer, Physical and Mathematical Modeling of Pyrometallurgical Channel Reactor, Ph.D. Dissertation, University of Utah, Salt Lake City, UT, 1992.
5. D. Doungdeethaveeratana, A Novel Solvent Extraction Process with Bottom Gas Injection, M.S. Thesis, University of Utah, Salt Lake City, Utah, 1995.