1. Geochemistry of uranium in apatite and phosphorite;Altschuler;U.S. Geol. Surv., Prof. Pap.,1958
2. The evolution of enhanced 234U/238U activity ratios for dissolved uranium and ground-water dating;Andrews,1978
3. The U contents and 234U/238U activity ratios of dissolved uranium in groundwaters from some Triassic sandstones in England;Andrews;Isot. Geosci.,1983
4. Uranium series dating of human skeletal remains from the Del Mar and Sunnyvale sites, California;Bischoff;Science,1981
5. Late Quaternary climates of Australia and New Guinea;Bowler;Quat. Res.,1976