@article{UM_2009__17_4_a3,
     author = {Beran, Ladislav and Trch, Milan},
     title = {P\v{r}{\'\i}mka, kterou hled\'ate (3)},
     journal = {U\v{c}itel matematiky},
     pages = {222--227},
     publisher = {mathdoc},
     volume = {17},
     number = {4},
     year = {2009},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/item/UM_2009__17_4_a3/}
}