@article{RM_1973_28_5_a8,
     author = {D. V. Alekseevskii},
     title = {$S^n$ and $E^n$ are the only {Riemannian} spaces that admit an essential conformal transformation},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     publisher = {mathdoc},
     volume = {28},
     number = {5},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1973_28_5_a8/}
}