@article{UM_2009_17_2_a4,
     author = {Mazurek, Ji\v{r}{\'\i}},
     title = {O pravd\v{e}podobnosti t\v{r}ikr\'at jinak},
     journal = {U\v{c}itel matematiky},
     pages = {99--103},
     year = {2009},
     volume = {17},
     number = {2},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/UM_2009_17_2_a4/}
}