@article{MZM_1997_61_4_a3,
     author = {D. V. Gorbachev},
     title = {Construction of the extremal function for a~functional on the class $H_\omega^{(n)}$},
     journal = {Matemati\v{c}eskie zametki},
     pages = {519--529},
     publisher = {mathdoc},
     volume = {61},
     number = {4},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1997_61_4_a3/}
}