@article{UM_2002_10_1_a8,
     author = {Zelinka, Bohdan},
     title = {Pozn\'amky o ne\v{r}e\v{s}iteln\'ych \'uloh\'ach ve \v{s}kole},
     journal = {U\v{c}itel matematiky},
     pages = {52--53},
     year = {2002},
     volume = {10},
     number = {1},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/UM_2002_10_1_a8/}
}