TY - JOUR AU - D. P. Kouzov TI - An energy principle of uniqueness for acoustic boundary value problems JO - Zapiski Nauchnykh Seminarov POMI PY - 1979 SP - 124 EP - 133 VL - 89 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ZNSL_1979_89_a10/ LA - ru ID - ZNSL_1979_89_a10 ER -