第二音波
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↑ Ackerman, C.; Overton, W. (1969). “Second Sound in Solid Helium-3”. Physical Review Letters 22 (15): 764–766. Bibcode: 1969PhRvL..22..764A. doi:10.1103/PhysRevLett.22.764.
↑ Narayanamurti, V.; Dynes, R. (1972). “Observation of Second Sound in Bismuth”. Physical Review Letters 28 (22): 1461–1465. Bibcode: 1972PhRvL..28.1461N. doi:10.1103/PhysRevLett.28.1461.
↑ Jackson, H.; Walker, C.; McNelly, T. (1970). “Second Sound in NaF”. Physical Review Letters 25: 26–28. Bibcode: 1970PhRvL..25...26J. doi:10.1103/PhysRevLett.25.26.
↑ Pitre, L. (2003). “The Comparison between a Second-Sound Thermometer and a Melting-Curve Thermometer from 0.8 K Down to 20 mK”. AIP Conference Proceedings.