@article{DAN_1997_353_3_a3,
     author = {S. B. Topuriya},
     title = {Boundary properties of the derivatives of the {Poisson} integral in},
     journal = {Doklady Akademii Nauk},
     pages = {306--309},
     publisher = {mathdoc},
     volume = {353},
     number = {3},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1997_353_3_a3/}
}