Geodesic
An estimation of the length of a convex curve in two-dimensional Aleksandrov spaces
Žurnal matematičeskoj fiziki, analiza, geometrii, Tome 16 (2020) no. 3, pp. 221-227 Cet article a éte moissonné depuis la source Math-Net.Ru

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In the paper, a generalization of the Toponogov theorem about the length of a curve in a two-dimensional Riemannian manifold is proved for the case of two-dimensional Aleksandrov spaces. 
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Alexander A. Borisenko. An estimation of the length of a convex curve in two-dimensional Aleksandrov spaces. Žurnal matematičeskoj fiziki, analiza, geometrii, Tome 16 (2020) no. 3, pp. 221-227. http://geodesic.mathdoc.fr/item/JMAG_2020_16_3_a1/

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