@article{DAN_1957_113_3_a6,
     author = {M. A. Ulanovskii},
     title = {On the conditions defining the objects of affine connectivity in {Riemannian} space},
     journal = {Doklady Akademii Nauk},
     pages = {507--508},
     publisher = {mathdoc},
     volume = {113},
     number = {3},
     year = {1957},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1957_113_3_a6/}
}