TY - JOUR AU - A. I. Markovskiǐ TI - $L_p$-estimates for the solutions of an equation that is close to the wave equation JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 1987 SP - 67 EP - 71 IS - 9 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_1987_9_a8/ LA - ru ID - IVM_1987_9_a8 ER -