1. G.N. Lewis, M. Randall, Thermodynamics, 2nd edn., New York, 1961.
2. V.V.G. Krishnamurty, Determination of the Fugacities of Helium in Gas Mixtures Using a Semi-Permeable Membrane, PhD Dissertation, Columbia Univ., New York, 1963.
3. An apparatus for direct fugacity measurements on mixtures containing hydrogen
4. H.W. Cooper, The Determination of Fugacities of Hydrogen in Hydrogen and Propane Mixtures Using a Semi-Permeable Membrane, PhD Dissertation, Columbia Univ., New York, 1967.
5. B. Ghosal, The Determination of Fugacities of Hydrogen in Hydrogen–Propane–Butane Mixtures, PhD Dissertation, Columbia Univ., New York, 1971.