@article{FAA_1999_33_4_a12,
     author = {Yu. T. Sil'chenko},
     title = {On a {Class} of {Semigroups}},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {90--93},
     year = {1999},
     volume = {33},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_1999_33_4_a12/}
}