@misc{MO_1997_3_a4,
     title = {The {Tournament} of the {Towns}},
     journal = {Matemati\v{c}eskoe obrazovanie},
     pages = {92--113},
     year = {1997},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MO_1997_3_a4/}
}