1. C.J. King, Separation Processes, 2nd Edition, McGraw Hill, New York, 1980, Chapter 14, p. 762.
2. L.A. Robbins, Liquid–liquid extraction, in: R.H. Perry, D.W. Green (Eds.), Chemical Engineers’ Handbook, 6th Edition, McGraw Hill, New York, 1985, pp. 15-9–15-14.
3. J. Wisniak, A. Tamir, Liquid–Liquid-Equilibrium and Extraction: A Literature Source Book, Elsevier, Amsterdam, 1980–1981.
4. D.F. Othmer, Am. Chem. Soc. Natl. Meet. Anaheim, March 1978.
5. Modeling of liquid–liquid equilibrium of polyethylene glycol-salt aqueous two-phase systems—the effect of partial dissociation of the salt