Publisher
Springer Berlin Heidelberg
Reference4 articles.
1. B.N. Provotorov 1962, JETP Sov.Phys. 42, 882.
2. J. Philippot 1964. Phys. Rev. 133A, 471.
3. D.A. Tayurskii 1989, phys. stat. sol.(b) 152, 645
4. A.I. Akhiezer and I.Y. Pomeranchuk 1944, J. Phys. USSR 8 206.