Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1990_47_4_a20, author = {A. V. Shkred}, title = {Letter to the {Editor}}, journal = {Matemati\v{c}eskie zametki}, pages = {160}, publisher = {mathdoc}, volume = {47}, number = {4}, year = {1990}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1990_47_4_a20/} }
A. V. Shkred. Letter to the Editor. Matematičeskie zametki, Tome 47 (1990) no. 4. http://geodesic.mathdoc.fr/item/MZM_1990_47_4_a20/