@article{MZM_1979_26_2_a2,
     author = {N. I. Berezovskii and N. I. Nagnibida},
     title = {A~description of continuous solutions of the operator equation $Y^2=d^2/dz^2$ in the space of entire functions},
     journal = {Matemati\v{c}eskie zametki},
     pages = {179--182},
     publisher = {mathdoc},
     volume = {26},
     number = {2},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1979_26_2_a2/}
}