@article{MZM_2001_69_3_a15,
     author = {G. M. Levin},
     title = {Letter to the {Editor}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {479--480},
     publisher = {mathdoc},
     volume = {69},
     number = {3},
     year = {2001},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2001_69_3_a15/}
}