1. Brandt, J. C.: 1966, Astrophys. J.
143, 205.
2. Burlaga, L. F.: 1974, NASA, GSFC Note X-692–72–395. Proceedings of Boulder Conf. on Shock Waves from the Sun, p. 123.
3. Dulk, G. A.: 1970, Proc. ASA
1, 372.
4. Dulk, G. A., Altschuler, M. D., and Smerd, S. F.: 1971, Astrophys. Letters
8, 235.
5. Hirshberg, J., Bame, S., and Robbins, D. E.: 1972, Solar Phys.
23, 487.