TY - JOUR AU - L. A. Muravei TI - On the analytic continuation of the Green functions of exterior boundary-value problems for the two-dimensional Helmholtz equation JO - Doklady Akademii Nauk PY - 1975 SP - 35 EP - 37 VL - 220 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1975_220_1_a6/ LA - ru ID - DAN_1975_220_1_a6 ER -