TY - JOUR AU - V. M. Gur'yanov TI - Approximate solution of boundary value problems for the wave equation JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 1980 SP - 22 EP - 28 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_1980_2_a2/ LA - ru ID - IVM_1980_2_a2 ER -