Nasir, T., and M. Adil. “A PRELIMINARY STUDY ON INDOOR RADON MEASUREMENTS IN SOME MUD MADE HOUSES IN THE OUTSKIRTS OF DERA ISMAIL KHAN CITY OF PAKISTAN”. The Nucleus, vol. 50, no. 3, Sept. 2013, pp. 273-8, http://thenucleuspak.org.pk/index.php/Nucleus/article/view/755.