@article{DAN_1976_231_1_a10,
     author = {V. A. Sharafutdinov},
     title = {The radius of injectivity of a complete open manifold of nonnegative curvature},
     journal = {Doklady Akademii Nauk},
     pages = {46--48},
     publisher = {mathdoc},
     volume = {231},
     number = {1},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1976_231_1_a10/}
}