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1990ApJ...348..641S - Astrophys. J., 348, 641-646 (1990/January-1)
Spectral behavior of Hercules X-1: its ling-term variability and pulse phase spectroscopy.
SOONG Y., GRUBER D.E., PETERSON L.E. and ROTHSCHILD R.E.
Abstract (from CDS):
Abstract Copyright: ∼
Journal keyword(s): Stars: Individual Constellation Name: Hercules X-1 - Stars: Neutron - X-Rays: Binaries
Simbad objects: 3
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