@article{DAN_1962_143_6_a4,
     author = {O. A. Ziza},
     title = {The summation of orthogonal series by {Euler} methods},
     journal = {Doklady Akademii Nauk},
     pages = {1257--1259},
     publisher = {mathdoc},
     volume = {143},
     number = {6},
     year = {1962},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1962_143_6_a4/}
}