@article{SM_1978_34_1_a1,
     author = {N. R. Kamyshanskii},
     title = {The classification of {pseudo-Riemannian} spaces $V^n$ with poles for~$n\geqslant3$},
     journal = {Sbornik. Mathematics},
     pages = {25--54},
     publisher = {mathdoc},
     volume = {34},
     number = {1},
     year = {1978},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1978_34_1_a1/}
}