High resolution optical and infrared spectroscopic observations of Cir X-1
(1999)
Low Luminosity States of the Black Hole Candidate GX 339-4. I. ASCA and Simultaneous Radio/RXTE Observations
(1999)
Infrared spectroscopic variability of Cygnus X-3 in outburst and quiescence
(1999)
Differential Rotation and Turbulence in Extended H I Disks
The Astrophysical Journal American Astronomical Society 511:2 (1999) 660-665