TY - JOUR AU - A. A. Danilov AU - V. I. Ivanov TI - Corrections to Fok asymptotics for a diffraction field near a surface of nonconstant curvature JO - Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki PY - 1980 SP - 979 EP - 992 VL - 20 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ZVMMF_1980_20_4_a14/ LA - ru ID - ZVMMF_1980_20_4_a14 ER -