The model is described in: O. Redlich, A.T. Kister, Ind. Eng. Chem. , 1948, 40, 341.
GEX/(R×T) = Σai×x1×x2×(x1 - x2)i, where the summation is from i = 0 to nTerms.
Parameters determined in TDE are the a vector.
Temperature dependences for activity-coefficient model parameters are expressed with: TDE-TSeries1.
Details of the model implementation in TDE, including ThermoML-Equation representation are available. (See the ThermoML web site for details of this IUPAC communication standard.)