1. Abies, H.D. 1971, Publ.U.S. Naval ObsSeries II, Vol 20,Part 4.
2. Condon, J.J., Condon, M.A., Gisler, G. and Puschell, J.J. 1982, Ap.J., 252, 102.
3. De Gioia-Eastwood, K., Grasdalen, G.L., Strom, S.E., and Strom, K.M. 1984, Ap.J., 278, 564.
4. Hodge, P., and Kennicutt, R.C. Jr. 1983, A. J., 88, 296.
5. Kenney, J. and Young, J. 1987, Ap.J.(Letters), submitted.