TY - JOUR AU - J. Shull AU - M. Van Steenberg BT - The Astrophysical Journal Supplement Series DA - Jan-01-1982 DO - 10.1086/190769 PY - 1982 EP - 95 T2 - The Astrophysical Journal Supplement Series TI - The ionization equilibrium of astrophysically abundant elements UR - http://adsabs.harvard.edu/full/1982ApJS...48...95S VL - 48 SN - 0067-0049 ER -