@article{AA_1998_10_2_a3,
     author = {S. V. Buyalo},
     title = {Geodesics in {Hadamard} spaces},
     journal = {Algebra i analiz},
     pages = {93--123},
     publisher = {mathdoc},
     volume = {10},
     number = {2},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_1998_10_2_a3/}
}