Y. Liu, Y. Guo, S. Wang, X. Wang, and T. Deng, “Predictive Phase Equilibria for Aqueous Quaternary System Containing Sodium, Potassium, Chloride and Sulfate Ions from 273.15 to 473.15 K”, ajc, vol. 27, no. 2, pp. 591–596, Jan. 2015.