1. : “Liquid and Solid Helium”; Oxford 1967.
2. : “Helium-3 and Helium-4”, New York 1969.
3. : “Superfluid Hydrodynamics”, Amsterdam, London, New York, 1974.
4. : “Third Sound”, in Progr. in Low Temp. Phys. VI, edited by C. J. Gorter, Amsterdam, London, 1970, S. 37.
5. Fifth Sound in SuperfluidHe4andHe3-He4Mixtures