TY - JOUR AU - A. S. Barashkov TI - Solution of an inverse problem for the Helmholtz equation with a~quasi-one-dimensional coefficient JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 1989 SP - 11 EP - 19 IS - 10 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_1989_10_a1/ LA - ru ID - IVM_1989_10_a1 ER -