ALSAS , S. A.; GARBA , Z. N.; SALLAU, M. S. NICKEL ADSORPTION ONTO SWEET DATTOCK SHELL: STATISTICAL ERROR FUNCTION MODELS AS PARAMETRIC ISOTHERM PREDICTORS. FUDMA JOURNAL OF SCIENCES, v. 6, n. 2, p. 208 - 220, 20 Jun. 2022.