Solubility modelling and thermodynamic aspect of d-aspartic acid in aqueous co-solvent mixtures of N-methyl-2-pyrrolidone, N,N-dimethylformamide, dimethyl sulfoxide and 1.4-dioxane Zhao, X.; Farajtabar, A.; Zhao, H.; Han, G.; The Journal of Chemical Thermodynamics 2019, 138, 196-204