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Nondestructive characterization of materials VII : proceedings of the seventh International Symposium on Nondestructive Characterization of Materials held in Prague, Czech Republic, June 1995. pp.727-734, 1996. Zuerich, Switzerland. Trans Tech Publications
Positron annihilation : Proceedings of the 9th International Conference on Positron Annihilation, August 26-31, 1991, Szombathely, Hungary. Pt.2 pp.1101-1104, 1992. Aederlmannsdorf, Switzerland. Trans Tech Publications
Positron annihilation : Proceedings of the 9th International Conference on Positron Annihilation, August 26-31, 1991, Szombathely, Hungary. Pt.2 pp.1025-1028, 1992. Aederlmannsdorf, Switzerland. Trans Tech Publications
Positron annihilation : Proceedings of the 9th International Conference on Positron Annihilation, August 26-31, 1991, Szombathely, Hungary. Pt.1 pp.333-340, 1992. Aederlmannsdorf, Switzerland. Trans Tech Publications