1. E. F. Gross and B. P. Zakharchenya, Dokl. Akad. Nauk SSSR 99, 527 (1954).
2. E. F. Gross and B. P. Zakharchenya, Dokl. Akad. Nauk SSSR 111, 564 (1956) [Sov. Phys. Dokl. 1, 678 (1957)]; E. F. Gross and B. P. Zakharchenya, J. Phys. Radium 1, 68 (1957).
3. F. Jankins and E. Segre, Phys. Rev. 55, 52 (1939).
4. U. F. Gross, B. P. Zakharchenya, and O. V. Konstantinov, Fiz. Tverd. Tela (Leningrad) 3, 305 (1961) [Sov. Phys. Solid State 3, 221 (1961)].
5. W. Wien, Ann. Phys. (Leipzig) 49, 842 (1916).