1. Ladenburg, Lewis, Pease, and Taylor, editors,Physical Measurements in Gas Dynamics and Combustion, Vol. 14, High Speed Aerodynamics and Jet Propulsion(Princeton University Press, Princeton, New Jersey, 1954). See article by R. Ladenburg and D. Bershader.
2. A. C. Candler,Modern Interferometers(Hilger and Watts, London, 1951);
3. On the theory of the refractive index of non-polar gases