@article{DAN_1987_294_1_a8,
     author = {Yu. A. Neretin},
     title = {Almost invariant structures and constructions of unitary},
     journal = {Doklady Akademii Nauk},
     pages = {37--41},
     publisher = {mathdoc},
     volume = {294},
     number = {1},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1987_294_1_a8/}
}