1 R.. Pallavicini, L.. Golub, R.. Rosner, G.S. Vaiana, T.R. Ayres, and J.L. Linsky, The Astrophysical Journal 248, (1981).
1 T.R. Ayres, J.L. Linsky, G.S. Vaiana, L.. Golub, and R.. Rosner, The Astrophysical Journal 250, (1981).