TY - JOUR AU - V. N. Semenyuta TI - On singular operator equations with shift on a circle JO - Doklady Akademii Nauk PY - 1977 SP - 1301 EP - 1302 VL - 237 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1977_237_6_a9/ LA - ru ID - DAN_1977_237_6_a9 ER -