1. The efficiency extrapolation method in coincidence counting;Baerg;Nucl. Instrum. Methods,1973
2. BIPM, 2004. Monographie BIPM-5, Table of Radionuclides, CIPM/CCRI, November 2004 (CD-ROM).
3. The standardisation of radioisotopes by beta-gamma coincidence method using high efficiency detectors;Campion;Int. J. Appl. Radiat. Isot.,1959
4. The Atomic Nucleus;Evans,1955
5. Hilário, K.A.F., 2002. Development of methods for activity determination for radionuclides with double decay emission β−–β+/electron capture—application to the standardisation of 192Ir, 152Eu and 186Re. Ph.D. Thesis, University of São Paulo, Brazil (in Portuguese).