Proceedings of the 17th International Conference on Defects in Semiconductors : ICDS-17, Gmunden, Austria, July 18-23, 1993. Pt.3 pp.1541-1546, 1994. Zurich, Switzerland. Trans Tech Publications
Proceedings of the 15th International Conference on Defects in Semiconductors : Budapest, Hungary, August 22-26, 1988. Part1 pp.79-84, 1989. Aederlmannsdorf, Switzwelns. Trans Tech Publications