Geodesic
On a problem by V. A. Toponogov
Matematičeskie trudy, Tome 13 (2010) no. 1, pp. 15-22 
V. N. Berestovskii. On a problem by V. A. Toponogov. Matematičeskie trudy, Tome 13 (2010) no. 1, pp. 15-22. http://geodesic.mathdoc.fr/item/MT_2010_13_1_a1/
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Voir la notice de l'article provenant de la source Math-Net.Ru

We give the positive solution of a problem formulated by V. A. Toponogov and discuss some of its natural generalizations.

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