1. Proceedings 5th International Conference on Amorphous and Liquid Semiconductors,1974
2. Tetrahedrally Bonded Amorphous Semiconductors,1974
3. Investigation of the density of localized states in a-Si using the field effect technique
4. Proceedings 5th International Conference on Amorphous and Liquid Semiconductors;Spear,1974
5. Proceedings 5th International Conference on Amorphous and Liquid Semiconductors;Nagels,1974