1 S.D. Vrtilek, J.C. Raymond, B.. Boroson, T.R. Kallman, H.. Quaintrell, and R.A. McCray, The Astrophysical Journal 563, (2001).
1 S.D. Vrtilek, H.. Quaintrell, B.. Boroson, M.. Still, H.. Fiedler, K.. O’Brien, and R.A. McCray, The Astrophysical Journal 549, (2001).