@article{MO_2000_15_4_a3,
     author = {A. V. Gladkii},
     title = {On {Definitions} of a {Length} of a {Circumference} and an {Area} of a {Circle}},
     journal = {Matemati\v{c}eskoe obrazovanie},
     pages = {41--50},
     publisher = {mathdoc},
     volume = {15},
     number = {4},
     year = {2000},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MO_2000_15_4_a3/}
}