%0 Journal Article %A M. I. Èfendiev %T Strictly hyperbolic higher-order equations in $L^p(\mathbf R^n)$, $1 %J Differencialʹnye uravneniâ %D 1991 %P 312-320 %V 27 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1991_27_2_a15/ %G ru %F DE_1991_27_2_a15