@article{10_21136_CPM_1951_108420,
     author = {Pt\'ak, Vlastimil},
     title = {Polouspo\v{r}\'adan\'e line\'arn{\'\i} prostory},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {283--290},
     publisher = {mathdoc},
     volume = {076},
     number = {4},
     year = {1951},
     doi = {10.21136/CPM.1951.108420},
     mrnumber = {0051446},
     zbl = {0081.32603},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1951.108420/}
}