1. Positon-decay of 121Te and the excited states of 121Sb;Bhattacharyya;Nucl. Phys.,1963
2. Table of Radioactive Isotopes;Browne,1986
3. Beggriffe und Benennungen in der radiologischen Technik;DIN 6814, Teil 4,1990
4. Radioactive Te from Sb bombardment;Edwards;Phys. Rev.,1946
5. The Atomic Nucleus;Evans,1955