TY - JOUR AU - Yu. I. Lyubich TI - On the eigenfunctions and associated functions of a~differentiation operator JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 1959 SP - 94 EP - 103 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_1959_4_a12/ LA - ru ID - IVM_1959_4_a12 ER -