@article{DAN_1967_177_1_a6,
     author = {B. A. Kushner},
     title = {Certain relations between the properties of constructive functions and of operators from quasinumbers to quasinumbers},
     journal = {Doklady Akademii Nauk},
     pages = {29--32},
     publisher = {mathdoc},
     volume = {177},
     number = {1},
     year = {1967},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1967_177_1_a6/}
}