TY  - RPRT
TI  - Spectral variability in early-type binary X-ray systems
AU  - Kallman, T. R.
AU  - Castor, J. I.
AU  - Olson, G. L.
AU  - Mccray, R.
PY  - 1984
UR  - https://ntrs.nasa.gov/citations/19840060491
ID  - 19840060491
ER  -