Positron annihilation, ICPA-11 : Proceedings of the 11th International Conference on Positron Annihilation, Kansas City, Missouri, USA, May 1997. pp.638-640, 1997. Zuerich, Switzerland. Trans Tech Publications
Positron annihilation, ICPA-11 : Proceedings of the 11th International Conference on Positron Annihilation, Kansas City, Missouri, USA, May 1997. pp.711-713, 1997. Zuerich, Switzerland. Trans Tech Publications