Name of the Speaker(s): Dr. Joachim Siebert
Institution:Max-Planck Institut f\"ur extraterrestrische Physik
Title of the communication: X-ray properties of the Parkes sample of flat-spectrum radio sources
Preliminary abstract (12 lines max.):
We investigate the X-ray properties of a complete sample of about 300 flat-spectrum radio sources from the Parkes catalog using the ROSAT All-Sky Survey and public pointed observations. First results of this study will be presented.