TY - JOUR AU - J. Shull BT - The Astrophysical Journal DA - Jan-12-1979 DO - 10.1086/157553 PY - 1979 EP - 761 T2 - The Astrophysical Journal TI - Heating and ionization by X-ray photoelectrons UR - http://adsabs.harvard.edu/full/1979ApJ...234..761S VL - 234 SN - 0004-637X ER -