@article{DAN_1960_131_4_a13,
     author = {L. N. Shevrin},
     title = {On densely imbedded ideals of semigroups},
     journal = {Doklady Akademii Nauk},
     pages = {765--768},
     publisher = {mathdoc},
     volume = {131},
     number = {4},
     year = {1960},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1960_131_4_a13/}
}