1 B.W. Bopp, S.H. Saar, C.W. Ambruster, P.. Feldman, R.C. Dempsey, M.. Allen, and S.C. Barden, The Astrophysical Journal 339, (1989).
1 S.H. Saar, and C.J. Schrijver, in (Springer Berlin Heidelberg, Berlin, Heidelberg, 1987), pp. 38–40.
1 S.H. Saar, J.L. Linsky, and M.S. Giampapa, in (Cointe-Ougree, Belgium, Universite de Liege, Liege, Belgium, 1987).
1 J.. Huovelin, S.H. Saar, I.. Tuominen, S.. Linnaluoto, and H.. Virtanen, in (Springer Berlin Heidelberg, Berlin, Heidelberg, 1987), pp. 41–43.