Proceedings of the 16th International Conference on Defects in Semiconductors : Lehigh University, Bethlehem, Pennsylvania, 22-26 July 1991. Pt.2 pp.763-768, 1992. Zurich, Switzerland. Trans Tech Publications
Silicon carbide, III-nitrides and related materials, ICSCIII-N'97 : proceedings of the International Conference on Silicon Carbide, III-Nitrides and Related Materials, Stockholm, Sweden, September 1997. Part2 pp.1335-1338, 1998. Zuerich, Switzerland. Trans Tech Publications
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