S. Munir, A. Mashiatullah, S. Mahmood, M. Zafar, T. Javed, and M. S. Khan, “ASSESSMENT OF GROUNDWATER QUALITY USING PHYSIOCHEMICAL AND GEOCHEMICAL ANALYSIS IN THE VICINITY OF LEI NALA, ISLAMABAD, PAKISTAN”, The Nucleus, vol. 48, no. 2, pp. 149–158, Mar. 2011.