1. Population doses from terrestrial gamma exposure in areas near to old phosphate mine, Russaifa, Jordan;Al-Jundi;Radiat. Meas.,2002
2. Anastasiou, T., Tsertos, H., Christofides, S., Christodoulides, G., 2002. Indoor radon concentration measurements in Cyprus using high-sensitivity portable detectors. J. Env. Radioactivity, accepted for publication; preprint physics/0212105.
3. Beck, H.L., De Planque, G., 1968. The radiation field in air due to distributed gamma ray sources in ground. New York: US DOE, Environmental Measurements Laboratory, HASL-195.
4. Beck, H.L., DeCampo, J., Gogolak, C., 1972. In situ Ge(Li) and NaI(Tl) gamma-ray spectrometry. New York: US DOE, Environmental Measurements Laboratory, HASL-258.
5. Canet, A., 1990. Methods for measuring radium isotopes. In: Canet, A., Jacquemin, R. (Eds.), The Environmental Behaviour of Radium, Vol. 1. Technical Report Series No. 310, IAEA, Vienna.