@article{JMAG_2020_16_3_a1,
     author = {Alexander A. Borisenko},
     title = {An estimation of the length of a convex curve in two-dimensional {Aleksandrov} spaces},
     journal = {\v{Z}urnal matemati\v{c}eskoj fiziki, analiza, geometrii},
     pages = {221--227},
     year = {2020},
     volume = {16},
     number = {3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JMAG_2020_16_3_a1/}
}