%0 Journal Article %A D. V. Churikov %T Structure of $k$-closures of finite nilpotent permutation groups %J Algebra i logika %D 2021 %P 231-239 %V 60 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/AL_2021_60_2_a7/ %G ru %F AL_2021_60_2_a7