@article{SM_1972_18_2_a8,
     author = {D. V. Alekseevskii},
     title = {Groups of conformal transformations of {Riemannian} spaces},
     journal = {Sbornik. Mathematics},
     pages = {285--301},
     publisher = {mathdoc},
     volume = {18},
     number = {2},
     year = {1972},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1972_18_2_a8/}
}