@article{DAN_1984_276_6_a19,
     author = {S. A. Feodorov},
     title = {An approach to the estimation of measure and cardinality of balls},
     journal = {Doklady Akademii Nauk},
     pages = {1360--1364},
     publisher = {mathdoc},
     volume = {276},
     number = {6},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1984_276_6_a19/}
}