TY - JOUR AU - T. Ayres BT - The Astrophysical Journal DA - Jan-10-1975 DO - 10.1086/153946 PY - 1975 EP - 799 T2 - The Astrophysical Journal TI - Semiempirical upper photosphere models - The sun /G2 V/ and Procyon /F5 IV-V/ UR - http://articles.adsabs.harvard.edu/full/1975ApJ...201..799A VL - 201 SN - 0004-637X ER -