TY - JOUR AU - Sydney Geltman BT - The Astrophysical Journal DA - 1965-04 DO - 10.1086/148133 PY - 1965 EP - 376 T2 - The Astrophysical Journal TI - Continuum States of H- and the Free-Free Absorption Coefficient UR - http://adsabs.harvard.edu/full/1965ApJ...141..376G VL - 141 SN - 0004-637X ER -