TY - JOUR AU - L. A. Ivanov TI - Diffraction problems with a noncylindrical boundary of discontinuity JO - Differencialʹnye uravneniâ PY - 1976 SP - 1485 EP - 1494 VL - 12 IS - 8 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1976_12_8_a12/ LA - ru ID - DE_1976_12_8_a12 ER -