R. Grant Athay-NCAR/UCAR
J. B. Zirker
Ionization and excitation equilibrium of Ca II in the solar atmosphere
The Astrophysical Journal
1962-07-01
136
242-249
article
Refereed
Copyright 1962 the American Astronomical Society
http://dx.doi.org/10.1086/147368
http://n2t.net/ark:/85065/d7gt5qjh