TY - JOUR AU - V. A. Il'in AU - A. A. Kuleshov TI - Necessary and sufficient conditions for a~generalized solution to the initial-boundary value problem for the wave equation to belong to $W^1_p$ with~$p\geq1$ JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 2013 SP - 115 EP - 120 VL - 283 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TM_2013_283_a7/ LA - ru ID - TM_2013_283_a7 ER -