@article{UM_2001_9_4_a5,
     author = {Sch\"atz, Ulrike},
     title = {S matematikou po cel\'y rok (4)},
     journal = {U\v{c}itel matematiky},
     pages = {226--227},
     year = {2001},
     volume = {9},
     number = {4},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/UM_2001_9_4_a5/}
}