1 S.M. Kahn, K.O. Mason, C.S. Bowyer, J.L. Linsky, B.M. Haisch, N.E. White, and S.H. Pravdo, The Astrophysical Journal 234, (1979).
1 J.L. Linsky, S.M. Kahn, K.O. Mason, N.E. White, and S.H. Pravdo, Bulletin of the American Astronomical Society 11, (1979).
1 R.A. McCray, J.M. Shull, P.E. Boynton, J.E. Deeter, S.S. Holt, and N.E. White, The Astrophysical Journal 262, (1982).