Evidence of a decrease of kHz QPO peak separation towards low frequencies in 4U 1728-34 (GX 354-0)
(2003)
The Connection Between Radio Quiet AGN and the High/Soft State of X-Ray Binaries
(2003)
Simultaneous radio and X-ray observations of the low-mass X-ray binary GX 13+1
(2003)
A universal radio–X-ray correlation in low/hard state black hole binaries
Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 344:1 (2003) 60-72