1. Accounts of the early work may be found in the Proc. Conf. on Amorphous and Liquid Semiconductors,1972
2. and at Garmisch-Partenkirchen, 1973, eds. J. Stuke and W. Brenig (Taylor and Francis, London 1974).
3. Amorphous semiconductors
4. Amorphous and Liquid Semiconductors,1974
5. Electronic and Structural Properties of Amorphous Solids,1973