@article{DAN_1970_194_6_a1,
     author = {Yu. A. Kaz'min},
     title = {A general problem from interpolation theory},
     journal = {Doklady Akademii Nauk},
     pages = {1251--1254},
     publisher = {mathdoc},
     volume = {194},
     number = {6},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1970_194_6_a1/}
}