TY - JOUR AU - V. I. Sumin TI - Volterra functional-operator equations in the theory of the JO - Doklady Akademii Nauk PY - 1989 SP - 1056 EP - 1059 VL - 305 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1989_305_5_a7/ LA - ru ID - DAN_1989_305_5_a7 ER -