TY - JOUR AU - G. Victor AU - E. Constantinides BT - Geophysical Research Letters DA - Jan-06-1979 DO - 10.1029/GL006i006p00519 PY - 1979 SP - 519 EP - 522 T2 - Geophysical Research Letters TI - Double photoionization and doubly charged ions in the thermosphere UR - http://doi.wiley.com/10.1029/GL006i006p00519 VL - 6 ER -