1949, Rev. Mod. Phys., 21, 447, 10.1103/RevModPhys.21.447
1961, Sov. Phys.-JLTP, 14, 1143
1972, Mon. Not. R. Astron. Soc., 160, 1P, 10.1093/mnras/160.1.1P
1975, Mon. Not. R. Astron. Soc., 171, 551, 10.1093/mnras/171.3.551
1976, Astrophys. J., 208, 275, 10.1086/154604
1978, Astrophys. Space Sci., 53, 429, 10.1007/BF00645031
1978, Astrophys. J., 219, 1043, 10.1086/155869
1974, Phys. Rev. Lett., 33, 442, 10.1103/PhysRevLett.33.442
1965, Sov. Astron. AJ, 8, 853
1965, Astrophys. J., 141, 1303, 10.1086/148218
1974, Astrophys. J., 193, 525, 10.1086/153189
1977, Astron. Astrophys., 59, 53
1975, Commun. Math. Phys., 41, 55, 10.1007/BF01608547
1976, Mon. Not. R. Astron. Soc., 175, 85, 10.1093/mnras/175.1.85
1976, Astrophys. J., 204, 235, 10.1086/154165
1964, Sov. Astron. AJ, 8, 19
1964, Phys. Rev., 136, B571, 10.1103/PhysRev.136.B571