%0 Journal Article %A A. V. Litavrin %T Subsystems and automorphisms of some finite magmas of order $k+k^2$ %J Izvestiya of Saratov University. Mathematics. Mechanics. Informatics %D 2020 %P 457-467 %V 20 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/ISU_2020_20_4_a4/ %G ru %F ISU_2020_20_4_a4