@article{DAN_1981_256_4_a4,
     author = {A. A. Nudelman},
     title = {On a generalization of classical interpolation problems},
     journal = {Doklady Akademii Nauk},
     pages = {790--793},
     year = {1981},
     volume = {256},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1981_256_4_a4/}
}