TY - JOUR AU - A. M. Savchuk AU - A. A. Shkalikov TI - On the Properties of Maps Connected with Inverse Sturm--Liouville Problems JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 2008 SP - 227 EP - 247 VL - 260 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TM_2008_260_a15/ LA - ru ID - TM_2008_260_a15 ER -