@article{DAN_1975_224_1_a9,
     author = {I. M. Tsalyuk},
     title = {Extremal problems for {Hardy} classes of vector valued functions},
     journal = {Doklady Akademii Nauk},
     pages = {46--49},
     publisher = {mathdoc},
     volume = {224},
     number = {1},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1975_224_1_a9/}
}