1. Coefficient of Expansion of Liquid Helium II
2. REFRACTIVE INDEX OF He4: LIQUID
3. E. Maxwell, C. E. Chase, and W. E. Millett, Proc. 5th Int. Conf. Low Temp., Phys., Madison, Wisconsin (1957), p. 53.
4. E. C. Kerr and R. Dean Taylor, private communication.