TY - JOUR
AU - Ludwig Oster
BT - Astronomy and Astrophysics
N1 - JILA Pub. 1156
PY - 1974
EP - 151
T2 - Astronomy and Astrophysics
TI - The Relation between Emission and Absorption Coefficients for Arbitrary Radiation Processes
UR - http://adsabs.harvard.edu/full/1974A\%26A....33..151O
VL - 33
ER -