@article{UM_2003_11_1_a0,
     author = {Hejn\'y, Milan and Tich\'a, Marie},
     title = {Matematick\'e p\v{r}{\'\i}b\v{e}hy (4): {P\v{r}{\'\i}b\v{e}h} \v{c}tvrt\'y. {Moudr\'y} osel},
     journal = {U\v{c}itel matematiky},
     pages = {1--10},
     year = {2003},
     volume = {11},
     number = {1},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/UM_2003_11_1_a0/}
}