@article{10_21136_CPMF_1911_123103,
     author = {Je\v{r}\'abek, V\'aclav},
     title = {O \v{c}ty\v{r}\'uheln{\'\i}ku, jeho\v{z} \'uhlop\v{r}{\'\i}\v{c}ky stoj{\'\i} na sob\v{e} kolmo},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky a fysiky},
     pages = {102--104},
     publisher = {mathdoc},
     volume = {40},
     number = {1},
     year = {1911},
     doi = {10.21136/CPMF.1911.123103},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPMF.1911.123103/}
}