@article{DAN_1995_340_1_a2,
     author = {Yu. L. Ershov},
     title = {Separability in hereditarily finite superstructures},
     journal = {Doklady Akademii Nauk},
     pages = {12--14},
     publisher = {mathdoc},
     volume = {340},
     number = {1},
     year = {1995},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1995_340_1_a2/}
}