Thermodynamic models for determination of the solubility of dl-malic acid in methanol plus (acetonitrile, N,N-dimethylformamide, isopropyl alcohol) binary solvent mixtures Zhang, Q.; Yang, Y.; Cheng, L.; Cao, C.; Ding, Z.; Wang, C.; Yang, W.; Hu, Y.; Li, Y.; The Journal of Chemical Thermodynamics 2015, 85, 148-154