Balakrishnan, Dhanya, A G Umadevi, Jose.P. Abraham, M. Rajagopalan, and J Jojo. “A Study on Activity Concentration of Natural Radionuclide of Building Materials in Kochi: Natural Radionuclide”. International Journal of Fundamental Physical Sciences 2, no. 3 (September 30, 2012): 41-43. Accessed March 29, 2024. https://www.fundamentaljournals.org/index.php/ijfps/article/view/113.