1. Altenhoff, W.J., Oster, L., and Wendker, H.J.: 1979, Astron. Astrophys. 73, L21.
2. Basri, G.S. and Linsky, J.L.: 1980, submitted to Astrophys. J.
3. Bernat, A.P.: 1977, Astrophys. J. 213, 756.
4. Bernat, A.P., Hall, D.N., Hinkle, K.H., and Ridgway, S.T.: 1979, Astrophys. J. (Letters) 233, L135.
5. Bernat, A.P., Honeycutt, R.K., Kephart, J.E., Gow, C.E., Sandford, M.T. II, and Lambert, D.L.: 1978, Astrophys. J. 219, 532.