@article{DAN_1960_134_2_a12,
     author = {\`E. G. Shutov},
     title = {Semigroups of almost identical transformations},
     journal = {Doklady Akademii Nauk},
     pages = {292--295},
     publisher = {mathdoc},
     volume = {134},
     number = {2},
     year = {1960},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1960_134_2_a12/}
}