@misc{UM_2015_23_4_a4,
     title = {Matematick\'a olympi\'ada},
     journal = {U\v{c}itel matematiky},
     pages = {235--255},
     year = {2015},
     volume = {23},
     number = {4},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/UM_2015_23_4_a4/}
}