ALKASIM, M, et al. “HEAVY METAL CONCENTRATIONS AND ASSOCIATED RISK BY SOME PHAEMACEUTICAL PRODUCTS AROUND SAMARU-ZARIA NIGERIA BASED ON XRF AND ASS METHODS”. FUDMA Journal of Renewable and Atomic Energy, vol. 1, no. 1, June 2024, pp. 118-30, https://doi.org/10.33003/fjorae.2024.0101.10.