TY - JOUR AU - N. I. Berezovskii AU - N. I. Nagnibida TI - A~description of continuous solutions of the operator equation $Y^2=d^2/dz^2$ in the space of entire functions JO - Matematičeskie zametki PY - 1979 SP - 179 EP - 182 VL - 26 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1979_26_2_a2/ LA - ru ID - MZM_1979_26_2_a2 ER -