@article{DAN_1963_152_3_a6,
     author = {I. I. Ibragimov and A. S. Dzhafarov},
     title = {A bound for a differential operator in the class of entire functions of finite degree},
     journal = {Doklady Akademii Nauk},
     pages = {533--536},
     publisher = {mathdoc},
     volume = {152},
     number = {3},
     year = {1963},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1963_152_3_a6/}
}