@article{SM_1967_2_2_a6,
     author = {L. M. Gluskin},
     title = {Letter to the {Editor}},
     journal = {Sbornik. Mathematics},
     pages = {269},
     publisher = {mathdoc},
     volume = {2},
     number = {2},
     year = {1967},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1967_2_2_a6/}
}