Dataset referencing 2013FR03
At.Data Nucl.Data Tables 99, 345 (2013)
C.Fry, M.Thoennessen
Discovery of actinium, thorium, protactinium, and uranium isotopes
COMPILATION 206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236Ac, 208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238Th, 212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239Pa, 217,218,219,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,242U; compiled first identification (or discovery) of isotopes.
doi: 10.1016/j.adt.2012.03.002