@article{MO_2003_4_a1,
     author = {N. N. Luzin},
     title = {A {Letter} to {N.} {Ovanesov}},
     journal = {Matemati\v{c}eskoe obrazovanie},
     pages = {9--15},
     year = {2003},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MO_2003_4_a1/}
}