1. D. J. Kim Phys. Rep. 171, 129 (1988).
2. V. M. Zverev and V. P. Silin, Zh. Éksp. Teor. Fiz. 93, 709 (1987) [Sov. Phys. JETP 66, 401 (1987)].
3. V. M. Zverev and V. P. Silin, Fiz. Met. Metalloved. 65, 895 (1988)
4. V. M. Zverev and V. P. Silin, Fiz. Tverd. Tela (Leningrad) 30, 1989 (1988) [Sov. Phys. Solid State 30, 1148 (1988)].
5. V. M. Zverev and V. P. Silin, Physica B 159, 43 (1989).