TY - JOUR AU - A. A. Klyachin AU - V. A. Klyachin TI - Uniqueness theorems for recovering the inverse image under~degenerate transformations JO - Izvestiya of Saratov University. Mathematics. Mechanics. Informatics PY - 2022 SP - 15 EP - 27 VL - 22 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ISU_2022_22_1_a1/ LA - ru ID - ISU_2022_22_1_a1 ER -