@article{CHEB_2021_22_5_a17, author = {S. S. Demidov}, title = {Once again about the <> of {Moscow} mathematicians in {Petrograd} in 1921}, journal = {\v{C}eby\v{s}evskij sbornik}, pages = {263--269}, publisher = {mathdoc}, volume = {22}, number = {5}, year = {2021}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/CHEB_2021_22_5_a17/} }