TY - JOUR
AU - E. Avrett
AU - J. Vernazza
AU - Jeffrey Linsky
BT - The Astrophysical Journal
DA - Jan-07-1976
DO - 10.1086/182212
PY - 1976
EP - L199
T2 - The Astrophysical Journal
TI - Excitation and ionization of helium in the solar atmosphere
UR - http://adsabs.harvard.edu/full/1976ApJ...207L.199A
VL - 207
SN - 0004-637X
ER -