  We incorporate the next-to-leading order (NLO) and the
next-to-next-to-leading order (NNLO) effects in the models of the Singlet
Structure function F 2 S (x, t) and the gluon distribution G(x, t) using DGLAP
equations approximated at small x. Analytical solutions both at the next-to
leading order (NLO) as well as the next-to-next-to leading order (NNLO) are
obtained. We then make comparisons with exact results.
