@article{10_21136_CMJ_1991_102493,
     author = {Kov\'a\v{c}ik, Ondrej and R\'akosn{\'\i}k, Ji\v{r}{\'\i}},
     title = {On spaces $L^{p(x)}$ and $W^{k, p(x)}$},
     journal = {Czechoslovak Mathematical Journal},
     pages = {592--618},
     publisher = {mathdoc},
     volume = {41},
     number = {4},
     year = {1991},
     doi = {10.21136/CMJ.1991.102493},
     mrnumber = {1134951},
     zbl = {0784.46029},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1991.102493/}
}