1. Arons, J. 1986, in Plasma Penetration into Magnetospheres, ed. N. Kylafis, J. Papamastorakis, and J. Ventura (Iraklion: Crete Univ. Press), 115
2. Bertout, C. 1989, ARAA 27, 351
3. Bertout, C., Basri, G., and Bouvier, J. 1988, ApJ 330, 350
4. Biskamp, D. 1993, Nonlinear Magnetohydrodynamics (Cambridge University Press)
5. Blandford, R.D., and Payne, D.G. 1982 MNRAS 199, 883