@article{10_21136_CPM_1970_108327,
     author = {Pt\'ak, Vlastimil},
     title = {Pozn\'amka k uzav\v{r}en\'ym zobrazen{\'\i}m},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {402--410},
     publisher = {mathdoc},
     volume = {095},
     number = {4},
     year = {1970},
     doi = {10.21136/CPM.1970.108327},
     mrnumber = {0279560},
     zbl = {0201.15703},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1970.108327/}
}