Shah, A., B. Khan, A. Khalid, N. Ali, S. Wazir, U. Aiman, S. Adnan, A. Yousaf, and M. Ahmad. “Adsorptive Removal of Nickel(II) and Chromium(III) from Aqueous Solutions onto Egg Shell Powder”. Brazilian Journal of Science, vol. 5, no. 3, Feb. 2026, pp. 31-47, doi:10.14295/bjs.v5i3.815.