%0 Journal Article %A Kopáček, Jiří %T On $L_p$-estimates for hyperbolic systems %J Czechoslovak Mathematical Journal %D 1973 %P 419-436 %V 23 %N 3 %I mathdoc %U https://geodesic-test.mathdoc.fr/articles/10.21136/CMJ.1973.101184/ %R 10.21136/CMJ.1973.101184 %G en %F 10_21136_CMJ_1973_101184