8Werner Stumm. Chemistry of the Solid - water Interface. A Wiley - Interscience Publication. John Wiley & Sons, Inc. 1992,p. 44.
9Liu Jin - chen, Lu Jiu - fang, Li Yi - gui. Study on the activity coefficients and the solubilities of amino acids in water by the perturbation theory. [ J ] Fluid Phase Equilibria, 1995, 142:67-82.
