Identifying variable gamma-ray sources through radio observations
  We present preliminary results of a campaign undertaken with different radio interferometers to observe a sample of the most variable unidentified EGRET sources. We expect to detect which of the possible counterparts of the gamma-ray sources (any of the radio emitters in the field) varies in time with similar timescales as the gamma-ray variation. If the gamma-rays are produced in a jet-like source, as we have modelled theoretically, synchrotron emission is also expected at radio wavelengths. Such radio emission should appear variable in time and correlated with the gamma-ray variability. 
J.M. Paredes, J. Marti, D.F. Torres, G.E. Romero, J.A. Combi, V.   Bosch-Ramon, J. Garcia-Sanchez