@article{10_21136_CPMF_1919_109098,
     author = {Petr, Karel},
     title = {Pozn\'amka ku p\v{r}edch\'azej{\'\i}c{\'\i}mu \v{c}l\'anku},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky a fysiky},
     pages = {336},
     year = {1919},
     volume = {48},
     number = {5},
     doi = {10.21136/CPMF.1919.109098},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPMF.1919.109098/}
}