@article{DAN_1976_228_3_a8,
     author = {A. B. Sosinskii},
     title = {Classifying semigroups},
     journal = {Doklady Akademii Nauk},
     pages = {551--554},
     publisher = {mathdoc},
     volume = {228},
     number = {3},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1976_228_3_a8/}
}