@article{10_21136_CPM_1962_117425,
     author = {Veselsk\'y, Bohumil},
     title = {Pozn\'amka k n\v{e}kter\'ym vlastnostem t\v{e}tivov\'eho \v{c}ty\v{r}\'uheln{\'\i}ka},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {180--187},
     publisher = {mathdoc},
     volume = {087},
     number = {2},
     year = {1962},
     doi = {10.21136/CPM.1962.117425},
     zbl = {0125.10102},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1962.117425/}
}