@article{MO_1997_1_a4,
     author = {N. V. Dubovitskaya and V. M. Imaykin},
     title = {Certain problems from old issues of {{\textquotedblleft}Mathematical} {Education"}},
     journal = {Matemati\v{c}eskoe obrazovanie},
     pages = {76--78},
     year = {1997},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MO_1997_1_a4/}
}