Key points are not available for this paper at this time.
Frederick G. Keyes, Leighton B. Smith, Harold T. Gerry, The Specific Volume of Steam in the Saturated and Superheated Condition Together with Derived Values of the Enthalpy, Entropy, Heat Capacity and Joule Thomson Coefficients: Part IV. Steam Research Program, Proceedings of the American Academy of Arts and Sciences, Vol. 70, No. 8 (Feb., 1936), pp. 319-364
Keyes et al. (Wed,) studied this question.