Geodesic
On a~problem by V.\,A.~Toponogov
Matematičeskie trudy, Tome 13 (2010) no. 1, pp. 15-22

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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     author = {V. N. Berestovskii},
     title = {On a~problem by {V.\,A.~Toponogov}},
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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/