Detection of electron showers in Dual-Readout crystal calorimeters

First attempts to use electromagnetic calorimeter prototypes made of either Mo-doped PbWO4 crystals or by BGO crystals, in view of the possible application of such a detector in Dual-Readout hybrid calorimetry are presented. We have tested matrices of these crystals as electromagnetic calorimeters and studied the properties of the Cherenkov and scintillation components of the signals generated by high-energy electrons showering in these detectors. In these proceedings we investigate to which extent the promise of improved calorimeter performance can be realized with such crystal matrices.