@article{MMO_2021_82_2_a5,
     author = {A. Yu. Pirkovskii},
     title = {Letter to the {Editors}},
     journal = {Trudy Moskovskogo matemati\v{c}eskogo ob\^{s}estva},
     pages = {393--394},
     publisher = {mathdoc},
     volume = {82},
     number = {2},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MMO_2021_82_2_a5/}
}