@article{10_21136_CPM_1956_117209,
     author = {Ma\v{r}{\'\i}k, Jan},
     title = {Pozn\'amka o \v{r}{\'\i}dk\'ych mno\v{z}in\'ach v $E_m$},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {337--341},
     year = {1956},
     volume = {81},
     number = {3},
     doi = {10.21136/CPM.1956.117209},
     mrnumber = {0085319},
     zbl = {0075.04101},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1956.117209/}
}