@article{DAN_1961_137_6_a9,
     author = {Yu. I. Levin},
     title = {Some spaces with affine connection admitting motions},
     journal = {Doklady Akademii Nauk},
     pages = {1295--1298},
     publisher = {mathdoc},
     volume = {137},
     number = {6},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1961_137_6_a9/}
}