TY - JOUR
AU - M. Blaha
BT - The Astrophysical Journal
DA - Jan-08-1969
DO - 10.1086/150084
PY - 1969
EP - 473
T2 - The Astrophysical Journal
TI - Effective Gaunt Factors g_eff for Excitation of Positive Ions by Electron Collisions in a Simplified Coulomb-Born Approximation
UR - http://adsabs.harvard.edu/full/1969ApJ...157..473B
VL - 157
SN - 0004-637X
ER -