Coeval Observations of a Complete Sample of Blazars with Effelsberg,   IRAM 30m, and Planck
  We present the outline and first results of a project using the synergies of the long term blazar radiomillimetre monitoring program F-GAMMA, the continued scanning of the millimetre-submillimetre sky by the Planck satellite, together with several dedicated observing programs at the Effelsberg 100m telescope, to obtain a data sample unprecedented in both time resolution and frequency span. 
J\"org P. Rachen (1 and 5), Lars Fuhrmann (2), Thomas Krichbaum (2),   Emmanouil Angelakis (2), Ioannis Nestoras (2), Anton ...
astro-ph.HE astro-ph.CO