@article{DAN_1977_233_4_a7,
     author = {N. R. Kamyshanskii},
     title = {Classification of complete and simply connected {pseudo-Riemannian} spaces $V^n$, $n\ge3$, containing at least one pole},
     journal = {Doklady Akademii Nauk},
     pages = {539--542},
     publisher = {mathdoc},
     volume = {233},
     number = {4},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1977_233_4_a7/}
}