@article{RMF_2013_88_3_a9,
     author = {T\"opfer, Pavel},
     title = {\'Ust\v{r}edn{\'\i} kolo 62. ro\v{c}n{\'\i}ku {Matematick\'e} olympi\'ady kategorie {P} a \'ulohy kategorie {A}},
     journal = {Rozhledy matematicko-fyzik\'aln{\'\i}},
     pages = {55--57},
     year = {2013},
     volume = {88},
     number = {3},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/RMF_2013_88_3_a9/}
}