@article{DAN_1975_221_3_a2,
     author = {D. L. Berman},
     title = {Divergent extended trigonometric interpolation processes},
     journal = {Doklady Akademii Nauk},
     pages = {520--523},
     year = {1975},
     volume = {221},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1975_221_3_a2/}
}