@article{PMFA_1961_6_6_a5,
     author = {Zelinka, Rudolf},
     title = {III. mezin\'arodn{\'\i} matematick\'a olympi\'ada},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {335--339},
     year = {1961},
     volume = {6},
     number = {6},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1961_6_6_a5/}
}