TY - JOUR AU - V. M. Babich TI - On the asymptotics of Green's functions for certain wave problems. I.~Stationary case JO - Sbornik. Mathematics PY - 1971 SP - 513 EP - 533 VL - 15 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SM_1971_15_4_a1/ LA - en ID - SM_1971_15_4_a1 ER -