function h = HFC134a()
    % Return an object representing refrigerant HFC134a. ::
    %
    %     >> h = ct.HFC134a()
    %
    % The object returned by this method implements an accurate equation of
    % state for refrigerant HFC134a (R134a) that can be used in the liquid,
    % vapor, saturated liquid/vapor, and supercritical regions of the phase
    % diagram. Implements the equation of state given in:
    %
    % R. Tillner-Roth and H. D. Baehr. "An International Standard Formulation for
    % The Thermodynamic Properties of 1,1,1,2-Tetrafluoroethane (HFC-134a) for
    % Temperatures From 170 K to 455 K and Pressures up to 70 MPa". J. Phys.
    % Chem. Ref. Data, Vol. 23, No. 5, 1994. pp. 657--729.
    % http://dx.doi.org/10.1063/1.555958
    %
    % For more details, see classes :ct:`PureFluidPhase` and :ct:`HFC134a` in the
    % Cantera C++ source code documentation.
    %
    % :return:
    %     Instance of class :mat:class:`ct.Solution`.

    h = ct.Solution('liquidvapor.yaml', 'HFC-134a');
end
