@article{10_21136_CPMF_1950_123873,
     author = {Kade\v{r}\'avek, Franti\v{s}ek},
     title = {O skupin\'ach ploch, kter\'e maj{\'\i} spole\v{c}n\'e charakteristick\'e vlastnosti},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky a fysiky},
     pages = {D277},
     publisher = {mathdoc},
     volume = {75},
     number = {3},
     year = {1950},
     doi = {10.21136/CPMF.1950.123873},
     zbl = {0040.07903},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPMF.1950.123873/}
}