Robert, J.J., and S.H. Okidim. “ASSESSING THE DISPERSION LEVELS OF TRACE ELEMENTS IN AIR FROM CONCRETE SITE BY DRY DEPOSITION”. Faculty of Natural and Applied Sciences Journal of Scientific Innovations , vol. 3, no. 1, Nov. 2021, pp. 1-10, https://fnasjournals.com/index.php/FNAS-JSI/article/view/13.