Vacancies and interstitials in metals and alloys : Proceedings of the International Conference on Vacancies and Interstitials in Metals and Alloys held in Berlin, Germany, September 14-19, 1986. Pt.3 pp.931-936, 1987. Aederlmannsdorf, Switzerland. Trans Tech Publications
Positron annihilation : ICPA-10 : Proceedings of the 10th International Conference on Positron Annihilation, May 23-29, 1994, Beijing, China. Part1 pp.533-536, 1995. Aederlmannsdorf, Switzerland. Trans Tech Publications
Positron annihilation : Proceedings of the 9th International Conference on Positron Annihilation, August 26-31, 1991, Szombathely, Hungary. Pt.3 pp.1703-1706, 1992. Aederlmannsdorf, Switzerland. Trans Tech Publications
Positron annihilation, ICPA-11 : Proceedings of the 11th International Conference on Positron Annihilation, Kansas City, Missouri, USA, May 1997. pp.333-335, 1997. Zuerich, Switzerland. Trans Tech Publications