TY - JOUR AU - P. Kunasz AU - D. van Blerkom BT - The Astrophysical Journal DA - Jan-09-1978 DO - 10.1086/156365 PY - 1978 EP - 193 T2 - The Astrophysical Journal TI - Mass loss from P Cygni. II - an equivalent two-level-atom approach UR - http://adsabs.harvard.edu/full/1978ApJ...224..193K VL - 224 SN - 0004-637X ER -