1. Antiochos, S.K.: 1979, Astrophys. J. Lett., 232, L125.
2. Belvedere, G., Chiuderi, C. and Paternò, L.: 1980a, Astron. Astrophys., in press.
3. Belvedere, G., Paternò, L. and Stix, M.: 1980b, Geophys. Astrophys. Fluid Dynamics, 14, 209.
4. Belvedere, G., Paternò, L. and Stix, M.: 1980c, Astron. Astrophys. 86, 40.
5. Belvedere, G., Paternò, L. and Stix, M.: 1980c, d, Astron. Astrophys., in press.