@article{UM_1997_5_4_a7,
     author = {Hor\'a\v{c}ek, Ivo and Lito\v{s}ov\'a, Jana},
     title = {Matematick\'e k\v{r}{\'\i}\v{z}ovky},
     journal = {U\v{c}itel matematiky},
     pages = {232--235},
     year = {1997},
     volume = {5},
     number = {4},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/UM_1997_5_4_a7/}
}