Defects in semiconductors, icds-19 : proceedings of the 19th International Conference on Defects in Semiconductors, Aveiro, Portugal, July 1997. Part2 pp.763-768, 1997. Zurich, Switzerland. Trans Tech Publications
Proceedings of the 15th International Conference on Defects in Semiconductors : Budapest, Hungary, August 22-26, 1988. Part1 pp.463-468, 1989. Aederlmannsdorf, Switzwelns. Trans Tech Publications