1. W.H. Bostick, V. Nardi, W.Prior: Ann. New York Acad. Sci; Vol 251, N.Y. 1975, p. 2.
2. V. Nardi, W.H. Bostick, W. Prior: Proc. Int. Conf. Physics in High Magnetic Fields, Grenoble, 18–21 Sept. 1974, CNRS edit.
3. I.F. Kvartskhava, K.N. Kervalidze, Y.S. Gvaladze & G.G. Zukakishvili. Nuclear Fusion 5, 181 (1965).
4. W.H. Bostick, W. Prior, L. Grunberger, G. Emmert. Phys. Fluids, 9, 2078 (1966).
5. W.H. Bostick, V. Nardi, L. Grunberger, W. Prior. Proc.I.A.U.Symp.43,Solar Magnetic Fields, Paris(ed.R.Howard),p.512.Reidel. 1970.