Excess molar volume, viscosity, and refractive index study for the ternary mixture {2-methyl-2-butanol (1) + tetrahydrofuran (2) + propylamine (3)} at different temperatures. Application of the ERAS-model and Peng-Robinson-Stryjek-Vera equation of state Fattahi, M.; Iloukhani, H.; The Journal of Chemical Thermodynamics 2010, 42, 1335-1345