@article{DAN_1983_273_5_a6,
     author = {V. B. Marenich},
     title = {The structure of the curvature tensor of an open manifold of},
     journal = {Doklady Akademii Nauk},
     pages = {1057--1062},
     publisher = {mathdoc},
     volume = {273},
     number = {5},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1983_273_5_a6/}
}