@article{TIMM_2021_27_1_a9,
     author = {S. F. Kamornikov and V. N. Tyutyanov},
     title = {On two problems from {{\textquotedblleft}The} {Kourovka} {Notebook{\textquotedblright}}},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {98--102},
     year = {2021},
     volume = {27},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_2021_27_1_a9/}
}