1. in: Electronic and Structural Properties of Amorphous Semiconductors, Ed. and , Academic Press, London 1973 (p. 1).
2. Proc. V. Internat. Conf. Amorphous and Liquid Semiconductors, Garmisch-Partenkirchen 1973, Taylor and Francis, London 1974 (p. 203).
3. Structural, Electrical, and Optical Properties of Amorphous Germanium Films
4. See, For example, and , Electronic Processes in Non-Crystalline Materials, Clarendon Press, Oxford 1971.
5. see [1] (p. 55).