%0 Journal Article %A M. R. Gabdullin %T Estimates for character sums in finite fields of order $p^2$ and $p^3$ %J Informatics and Automation %D 2018 %P 45-58 %V 303 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_2018_303_a4/ %G ru %F TRSPY_2018_303_a4