TY  - JOUR
AU  - Hummer, David
AU  - Rybicki, G
C2  - Astrophysical Journal
DA  - 1992-01-01
LA  - en
M1  - 387
PB  - Astrophysical Journal
PY  - 1992
TI  - The Sobolev approximation for line formation with partial frequency redistribution
ER  -