The nature of the progenitor of the Type II-P supernova 1999em
(2001)
VLT optical observations of V821 Ara(=GX339-4) in an extended "off" state
(2001)
An Upper Mass Limit for the Progenitor of the Type II-P Supernova SN 1999gi**Based on observations made with the NASA/ESA Hubble Space Telescope, obtained from the data archive of the Space Telescope Institute, which is operated by the Association of the Universities for Research in Astronomy, Inc., under NASA contract NAS5-26555.
The Astrophysical Journal American Astronomical Society 556:1 (2001) l29-l32
A relativistic jet from Cygnus X-1 in the low/hard X-ray state
(2001)