@misc{UM_2007_15_4_a3,
     title = {Matematick\'a olympi\'ada},
     journal = {U\v{c}itel matematiky},
     pages = {213--231},
     year = {2007},
     volume = {15},
     number = {4},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/UM_2007_15_4_a3/}
}