@article{DAN_1974_217_1_a6,
     author = {M. I. Stesin},
     title = {On {Aleksandrov} diameters of balls},
     journal = {Doklady Akademii Nauk},
     pages = {31--33},
     publisher = {mathdoc},
     volume = {217},
     number = {1},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1974_217_1_a6/}
}