1. Abumurad, K., Kullab, M., Al-Bataina, B., Ismail, A., Lehlooh, A., 1994. Estimation of radon concentration inside houses in some Jordan regions. Mu’tah J. Res. Stud. B9, 9–21.
2. A survey of radon levels in Jordanian dwellings during an autumn season;Abumurad;Radiat. Prot. Dosim.,1997
3. Measurement of radon 222 in Jordanian dwellings;Al-Kofahi;Nucl. Tracks Radiat. Meas.,1992
4. Indoor radon and lung cancer: reality or myth;Cross,1992
5. ICRP, 1989. Lung cancer risk from indoor exposure to radon daughters. Publication 50.