Singh, V. ., D. . Padalia, and K. . Devlal. “Determination of Cu, Zn, Mn & Fe Metals in Soil Employing the EDXRF &Amp; FAAS Techniques and Comparative Study of Results”. Journal of Nuclear Physics, Material Sciences, Radiation and Applications, vol. 4, no. 2, Feb. 2017, pp. 383-91, doi:10.15415/jnp.2017.42033.