第二音波
↑ Smith, Henrik; Jensen, H. Hojgaard (1989). “Section 4.3: Second Sound”. Transport Phenomena. Oxford University Press. ISBN 0-19-851985-0. https://books.google.com/books?id=xPt9AAAAIAAJ
↑ Srinivasan, R (March 1999). “Second Sound: Waves of Entropy and Temperature”. Resonance 3: 16–24. http://www.ias.ac.in/resonance/Mar1999/pdf/Mar1999p16-24.pdf.
↑ Srinivasan, R (June 1999). “Second Sound: The Role of Elastic Waves”. Resonance 4: 15–19. doi:10.1007/bf02834631. http://www.ias.ac.in/resonance/June1999/pdf/June1999p15-19.pdf.
↑ Prohofsky, E.; Krumhansl, J. (1964). “Second-Sound Propagation in Dielectric Solids”. Physical Review 133 (5A): A1403. Bibcode: 1964PhRv..133.1403P. doi:10.1103/PhysRev.133.A1403.
↑ Chester, M.