1. K.P. Pretzl, these proceedings.
2. M. Le Gros, A. Da Silva, B.G. Turrell, A. Kotlicki and A.K. Drukier, Appl. Phys. Lett.56, 2234 (1990).
3. R. Leoni, G. Schirripa Spagnolo, P. Carelli, M.G. Castellano and M. Cirillo, in Low Temperature Detectors for Neutrinos and Dark Matter IV, eds. N.E. Booth and G.L. Salmon (Editions Frontieres, Gif-sur-Yvette Cedex 1992) p.57.
4. R. Leoni, M.G. Castellano, G. Schirripa Spagnolo, P. Carelli and M. Cirillo, Nucl. Instr. and Meth.A322, 258 (1992).
5. C.Berger, A.Gabutti, S.Janos, P.Carelli, M.G.Castellano, R.Leoni and D.Peschiaroli, these proceedings.