%0 Journal Article %A Kováčik, Ondrej %A Rákosník, Jiří %T On spaces $L^{p(x)}$ and $W^{k, p(x)}$ %J Czechoslovak Mathematical Journal %D 1991 %P 592-618 %V 41 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1991.102493/ %R 10.21136/CMJ.1991.102493 %G en %F 10_21136_CMJ_1991_102493