1. I.A.U. Symp. Series, Symp. No. 2;G. K. Batchelor,1955
2. Beckers, J. M.: 1968, Solar Phys. 3, 430.
3. De Jager, C.: 1965, Introduction to Solar Terrestrial Relations (ed. by J. Ortner and H. Maseland), D. Reidel Publishing Company, Dordrecht, Holland, ch. 1, 3, 4.
4. Ferraro, V. C. A. and Plumpton, C.: 1966, An Introduction to Magneto-Fluid Mechanics, 2nd. ed., Clarendon Press, Oxford, Ch. 3.
5. Kakinuma and Swarup 1962, Astrophys. J. 136, 975.