@article{UM_1998_6_2_a11,
     author = {Vrbsk\'y, Arne},
     title = {Lze \v{s}et\v{r}it i v matematice?},
     journal = {U\v{c}itel matematiky},
     pages = {115--119},
     year = {1998},
     volume = {6},
     number = {2},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/UM_1998_6_2_a11/}
}