%0 Journal Article %A Alexander A. Borisenko %T An estimation of the length of a convex curve in two-dimensional Aleksandrov spaces %J Žurnal matematičeskoj fiziki, analiza, geometrii %D 2020 %P 221-227 %V 16 %N 3 %U http://geodesic.mathdoc.fr/item/JMAG_2020_16_3_a1/ %G en %F JMAG_2020_16_3_a1