%0 Journal Article %A A. B. Aliev %T Unilateral problems for quasilinear hyperbolic operators in function spaces %J Doklady Akademii Nauk %D 1987 %P 271-275 %V 297 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1987_297_2_a1/ %G ru %F DAN_1987_297_2_a1