1. The geochemistry of thorium and uranium;Adams,1959
2. Influence de l'alteration meteorique sur l'uranium a l'etat de traces daus le granite a deux micas de St. Sylvestre;Barbier;Geochim. Cosmochim. Acta,1966
3. The possibilities of obtaining long-range supplies of uranium, thorium, and other substances from igneous rocks;Brown;U.S. Geol. Survey Prof. Paper 300,1955
4. Uranium-234;Cherdyntsev,1971
5. Migration of uranium and thoriumexploration significance;Gableman,1977