Iqbal, S., M. Wasim, M. Arif, and Y. Anwar. “METHODOLOGY DEVELOPMENT FOR THE DETERMINATION OF GAMMA EMITTING RADIONUCLIDES IN MOSS-SOIL (IAEA-447) AND STATISTICAL EVALUATION OF THE PROFICIENCY TEST RESULTS SUBMITTED TO THE IAEA”. The Nucleus, vol. 48, no. 3, July 2011, pp. 231-6, http://www.thenucleuspak.org.pk/index.php/Nucleus/article/view/837.