1. Abbott, D. C., Bieging, J. H., and Churchwell, E.: 1984, Astrophys. J.
280, 671.
2. Abbott, D. C., Bieging, J. H., and Churchwell, E.: 1985, in A. B. Underhill and A. G. Michalitsianos (eds.), The Origin of Nonradiative Heating/Momentum in Hot Stars, NASA Conf. Publ. 2358, p. 47.
3. Athay, R. G.: 1976, The Solar Chromosphere and Corona: Quiet Sun, D. Reidel Publ. Co., Dordrecht, Holland, p. 282.
4. Auvergne, M., Le Contel, J.-M., and Baglin, A.: 1979, Astron. Astrophys.
87, 15.
5. Ayres, T. R.: 1981, Astrophys. J.
244, 1064.