TY - JOUR AU - L. A. Aksent'ev TI - Symmetric solutions of inverse boundary value problems JO - Trudy seminara po kraevym zadačam PY - 1977 SP - 20 EP - 27 VL - 14 IS - 14 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/KUKZ_1977_14_14_a1/ LA - ru ID - KUKZ_1977_14_14_a1 ER -