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. Part1 pp.103-106, 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.1 pp.653-656, 1994. Zurich, Switzerland. Trans Tech Publications