TY - JOUR AU - O. A. Godin TI - A sound field in a neighborhood of a caustic in a moving medium JO - Doklady Akademii Nauk PY - 1990 SP - 346 EP - 349 VL - 313 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1990_313_2_a20/ LA - ru ID - DAN_1990_313_2_a20 ER -