@article{UM_1999_7_3_a10,
     author = {\v{S}arounov\'a, Alena},
     title = {Dev\'at\'a \v{s}kola v p\v{r}{\'\i}rod\v{e} - \v{c}ervenec 1999},
     journal = {U\v{c}itel matematiky},
     pages = {187},
     year = {1999},
     volume = {7},
     number = {3},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/UM_1999_7_3_a10/}
}