@misc{MO_1998_a4,
     title = {The {Correspondence} {Competition} of the {Tournament} of the {Towns}},
     journal = {Matemati\v{c}eskoe obrazovanie},
     pages = {142--150},
     publisher = {mathdoc},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MO_1998_a4/}
}