@article{UM_1992_0_4_a17,
     author = {Zelinka, Bohdan},
     title = {Katastrofick\'e vize o {Matematick\'e} olympi\'ad\v{e}},
     journal = {U\v{c}itel matematiky},
     pages = {26},
     year = {1992},
     volume = {0},
     number = {4},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/UM_1992_0_4_a17/}
}