@article{SEMR_2023_20_1_a16,
     author = {S. V. Agapov},
     title = {Letter to the {Editor}},
     journal = {Sibirskie \`elektronnye matemati\v{c}eskie izvesti\^a},
     pages = {47},
     publisher = {mathdoc},
     volume = {20},
     number = {1},
     year = {2023},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SEMR_2023_20_1_a16/}
}