1. Proc. 5th Internat. Conf. Amorphous and Liquid Semicond., Garmisch-Partenkirchen 1973 (p. 203).
2. , and , Proc. 5th Internat. Conf. Amorphous and Liquid Semicond., Garmisch-Partenkirchen 1973 (p. 69).
3. , , , , and , Proc. 5th Internat. Conf. Amorphous and Liquid Semicond., Garmisch-Partenkirchen (p. 109).
4. and , Proc. 5th Internat. Conf. Amorphous and Liquid Semicond., Garmisch-Partenkirchen (p. 549).
5. , , and , Proc. 5th Internat. Conf. Amorphous and Liquid Semicond., Garmisch-Partenkirchen (p. 245).