@article{MZM_1994_56_5_a14,
     author = {L. S. Efremova},
     title = {Letter to the editor},
     journal = {Matemati\v{c}eskie zametki},
     pages = {141},
     year = {1994},
     volume = {56},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1994_56_5_a14/}
}