@article{UM_2017_25_5_a8,
     author = {Tkadlec, Josef},
     title = {58. mezin\'arodn{\'\i} matematick\'a olympi\'ada},
     journal = {U\v{c}itel matematiky},
     pages = {314--320},
     year = {2017},
     volume = {25},
     number = {5},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/UM_2017_25_5_a8/}
}