TY - JOUR AU - V. A. Yurko TI - The inverse problem for differential operators of second order with regular boundary conditions JO - Matematičeskie zametki PY - 1975 SP - 569 EP - 576 VL - 18 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1975_18_4_a9/ LA - ru ID - MZM_1975_18_4_a9 ER -