@article{DAN_1970_191_3_a9,
     author = {V. A. Toponogov},
     title = {Theorems on minimizing paths in noncompact {Riemannian} spaces of positive curvature},
     journal = {Doklady Akademii Nauk},
     pages = {537--539},
     publisher = {mathdoc},
     volume = {191},
     number = {3},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1970_191_3_a9/}
}