@article{DE_1991_27_2_a15,
     author = {M. I. \`Efendiev},
     title = {Strictly hyperbolic higher-order equations in $L^p(\mathbf R^n)$, $1<p<+\infty$},
     journal = {Differencialʹnye uravneni\^a},
     pages = {312--320},
     publisher = {mathdoc},
     volume = {27},
     number = {2},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1991_27_2_a15/}
}