Upper Limits on Central Black Hole Masses of Globular Clusters from Radio Emission and a Possible Black Hole Detection in the Ursa Minor Dwarf Galaxy
(2004)
The 2003 radio outburst of a new X-ray transient: XTE J1720-318
(2004)
On the Soft Excess in the X-ray Spectrum of Cir X-1: Revisitation of the Distance to Cir X-1
(2004)
Evidence of a Black Hole in the X-Ray Transient GS 1354–64 (=BW Circini)
The Astrophysical Journal American Astronomical Society 613:2 (2004) l133-l136