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@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/} }
G. M. Levin. Letter to the Editor. Matematičeskie zametki, Tome 69 (2001) no. 3, pp. 479-480. http://geodesic.mathdoc.fr/item/MZM_2001_69_3_a15/