@article{TM_1951_38_a4,
     author = {A. O. Gel'fond},
     title = {Linear differential equations of infinite order with constant coefficients and asymptotic periods of entire functions},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {42--67},
     publisher = {mathdoc},
     volume = {38},
     year = {1951},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_1951_38_a4/}
}