@misc{PMFA_1966_11_4_a9,
     title = {Konkurs na n\'avrhy \'uloh pro matematickou a fyzik\'aln{\'\i} olympi\'adu},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {262},
     year = {1966},
     volume = {11},
     number = {4},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1966_11_4_a9/}
}