TY - JOUR AU - É. B. Bykhovskii TI - Absence in $C$, $L_p$ and $W_p^1$ ($1\le p<2$) spaces of analogues to energy inequality for the string equation with a bounded leading coefficient JO - Doklady Akademii Nauk PY - 1965 SP - 1047 EP - 1049 VL - 163 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1965_163_5_a0/ LA - ru ID - DAN_1965_163_5_a0 ER -