TY - JOUR AU - P. Judge BT - The Astrophysical Journal DA - Jan-01-1990 DO - 10.1086/168235 PY - 1990 EP - 279 T2 - The Astrophysical Journal TI - On the interpretation of chromospheric emission lines UR - http://adsabs.harvard.edu/full/1990ApJ...348..279J VL - 348 SN - 0004-637X ER -