1. T. Agekyan, Sov. Astron. 5, 809 (1962)
2. V. A. Antonov, Vest. Leningr. Gos. Univ. 7, 135 (1962)
3. E. B. Aronson, C.J. Hansen, Astrophys. J. 177, 145 (1972)
4. R. Balescu, Statistical Mechanics of Charged Particles (Interscience, New York, 1963)
5. P. Barge, J. Sommeria, Astron. Astrophys. 295, L1 (1995)