@article{PMFA_1959_4_6_a0,
     author = {\v{S}vec, Alois},
     title = {Zak\v{r}iven\'e prostory},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {657--658},
     year = {1959},
     volume = {4},
     number = {6},
     zbl = {0087.36902},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1959_4_6_a0/}
}