Shahzad, M. I., G. Sher, S. Manzoor, H. A. Khan, E. U. Khan, M. Rafique, and S. Jabeen. “MEASUREMENT OF RADON (222Rn) CONCENTRATION AT HIGH ALTITUDES IN THE NORTHERN AREAS OF PAKISTAN”. The Nucleus, vol. 46, no. 1-2, June 2020, pp. 15-20, doi:10.71330/thenucleus.2009.971.