13Th International Conference on Positron Annihilation (Icpa-13), Date: SEP 07-12, 2003, Location: Kyoto, JAPAN, Sponsors: Commemorat Assoc Japan World Exposit (1970), Res Fdn Mat Sci, Sci Council Japan, Phys Soc Japan, Japan Soc Appl Phys, Chem Soc Japan, Japanese Soc Radiat Chem, Japan Radioisotope Assoc