%0 Journal Article %A È. G. Shutov %T Semigroups of one-to-one transformations %J Doklady Akademii Nauk %D 1961 %P 1026-1028 %V 140 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1961_140_5_a11/ %G ru %F DAN_1961_140_5_a11