THE DIAGNOSTICS OF ASTROPHYSICAL PLASMAS, USING THE OXYGEN VII SOFT X-RAY LINES A.H. GABRIEL, F. BELY-DUBAU, P. FAUCHER and L.W. ACTON J. Phys. Colloques, 49 C1 (1988) C1-235-C1-238 DOI: 10.1051/jphyscol:1988148