@article{10_21136_CPM_1956_117227,
     author = {Sedl\'a\v{c}ek, Ji\v{r}{\'\i}},
     title = {O jednom extr\'emn{\'\i}m rovinn\'em grafu},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {426--430},
     publisher = {mathdoc},
     volume = {081},
     number = {4},
     year = {1956},
     doi = {10.21136/CPM.1956.117227},
     mrnumber = {0087951},
     zbl = {0075.18102},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1956.117227/}
}