@article{DAN_1966_168_5_a5,
     author = {Ya. L. Kreinin},
     title = {Effectively $\Phi$-separable sets},
     journal = {Doklady Akademii Nauk},
     pages = {993--996},
     publisher = {mathdoc},
     volume = {168},
     number = {5},
     year = {1966},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1966_168_5_a5/}
}