共 5 条
[1]
GREEN J, 1964, POSITRONIUM CHEM
[3]
PRECISION ENERGY MEASUREMENT OF RU-106 512KEV GAMMA-RAY COMPARED WITH POSITRON-ANNIHILATION RADIATION
[J].
NUCLEAR INSTRUMENTS & METHODS,
1976, 137 (03)
:599-601
[4]
SHIZUMA K, 1978, NUCLEAR INSTRUM METH, V150