1. Albregsten, F. and Hansen, T. L.: 1977, Solar Phys. 54, 31.
2. Alissandrakis, C. E., Macris, C. J., and Zachariadis, G.: 1982, Solar Phys. 76, 129.
3. Altrock, R. G: 1976, Solar Phys. 47, 517.
4. Altrock, R. C.: 1984, in S. L. Keil (ed.), Small-Scale Dynamical Processes in the Solar and Stellar Atmosphere, Sacramento Peak Observatory, Sunspot, New Mexico.
5. Antia, H. M., Chitre, S. M., and Pandey, S. K.: 1981, Solar Phys. 70, 67.