1. Uranium Series Disequilibrium;Ivanovich,1982
2. Trudy Tret'ei Sessii Komissii po opredeleniyu absolyutnogo vozrasta geologicheskikh formatsii (Transactions of the third session of the commission for determining the absolute age of geological formations);Cherdyntsev;Izv. Akad. Nauk SSSR,1955
3. Anomalous234U/238U in nature;Thurber;J. Geophys. Res.,1962
4. Isotopes of uranium and radium in Indian rivers;Bhat,1969
5. The marine geochemistry of the uranium isotopes,230Th and231Pa;Turekian,1971