@article{DAN_1960_133_5_a9,
     author = {V. A. Toponogov},
     title = {Relation between curvature and topological structure for {Riemannean} spaces of an even number of dimensions},
     journal = {Doklady Akademii Nauk},
     pages = {1031--1033},
     publisher = {mathdoc},
     volume = {133},
     number = {5},
     year = {1960},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1960_133_5_a9/}
}