@misc{MO_2015_73_1_a7,
     title = {Information},
     journal = {Matemati\v{c}eskoe obrazovanie},
     pages = {77},
     publisher = {mathdoc},
     volume = {73},
     number = {1},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MO_2015_73_1_a7/}
}