@article{10_21136_CPM_1969_117650,
     author = {Karger, Adolf},
     title = {Pozn\'amka k definici {Kleinovy} kvadriky v metrick\'e p\v{r}{\'\i}mkov\'e geometrii},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {70--77},
     publisher = {mathdoc},
     volume = {094},
     number = {1},
     year = {1969},
     doi = {10.21136/CPM.1969.117650},
     mrnumber = {0243420},
     zbl = {0167.49304},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1969.117650/}
}