TY - JOUR AU - D. K. Ozerov AU - Yu. A. Surkov TI - On the influence of thin layers on the leading phases of a direct wave JO - Zapiski Nauchnykh Seminarov POMI PY - 1999 SP - 5 EP - 11 VL - 253 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ZNSL_1999_253_a0/ LA - ru ID - ZNSL_1999_253_a0 ER -