Iqbal, M. A., M. Tufail, and A. Mahmood. 2010. “RADON CONCENTRATION MEASUREMENTS FOR DETERMINATION OF RADIATION DOSE AND ASSESSMENT OF CANCER RISK IN THE PREMISES OF SOME COLLEGES IN LAHORE, PAKISTAN”. The Nucleus 47 (4):279-85. http://thenucleuspak.org.pk/index.php/Nucleus/article/view/873.