@article{MZM_2021_110_1_a2,
     author = {V. N. Dubinin},
     title = {Sharp {Inequalities} for {Rational} {Functions} on a {Circle}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {29--36},
     publisher = {mathdoc},
     volume = {110},
     number = {1},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2021_110_1_a2/}
}