1. The Natural Radiation Environment;Adams,1964
2. Adams, J.A., Loweder, W.M., Thomas, F.G., 1972. The Natural Radiation Environment II. Rice University and The University of Texas School of Public Health.
3. Geological history and lithostragraphy of the Arabian Desert orogenic belt of Egypt between latitudes 25°35′ and 26°30′;Akaad;N.I.A.G. Bull. Jeddah,1960
4. Heat production in an Archean crustal profile and implifications for heat flow and mobilization of heat-producing elements;Ashwall;Earth Planet. Sci. Lett.,1987
5. Cermak, V., Huckenholz, H.G., Rybach, L., Schmid, R., 1982. Radioactive heat generation in rocks. In: Hellwege, K. (Ed.), Landolt-Börnstein Numerical Data and Functional Relationships in Science and Technology. New Series, Group V. Geophysics and Space Research, vol. 1, Physical properties of rocks, supvolume b, Springer-Verlag, Berlin, Heidelberg, New York, pp. 433–481 (Chapter 4.4).