@article{DAN_1962_145_5_a13,
     author = {M. F. Timan},
     title = {Deviation of harmonic functions from their boundary values and best approximation},
     journal = {Doklady Akademii Nauk},
     pages = {1008--1009},
     publisher = {mathdoc},
     volume = {145},
     number = {5},
     year = {1962},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1962_145_5_a13/}
}