  Five cryogenic resonant gravitational antennas are now in operation. This is
the first time that such a large number of high sensitive antennas are taking
data and an agreement on data exchange has been signed by the responsible
groups. The data exchanged will consist essentially in lists of ''candidate
events''. In this paper the procedure used by the Rome group in order to obtain
''candidate events'' is presented.
  Some methods of analyzing the data of the "network" of the five antennas are
shown.
