1. Radiation shielding properties of some natural rocks in upper Egypt;Abbady;Arab Journal of Nuclear Science and Applications,1999
2. Field measurements of radon-222 in soil using AlphaGuard and E-PERM electret;Abbady;Nuclear Science Journal,2000
3. The Natural Radiation Environment;Adam,1964
4. Measurements of natural radioactivity inside Dandara temple;Ahmed;Radiation Physics and Chemistry,1994
5. Radon concentration and exhalation rates of powdered phosphate samples;Ahmed;Nuclear Science Journal,2000