@article{RMF_2015_90_4_a7,
     author = {T\"opfer, Pavel},
     title = {\'Ust\v{r}edn{\'\i} kolo 64. ro\v{c}n{\'\i}ku {Matematick\'e} olympi\'ady {\textendash} kategorie {P}},
     journal = {Rozhledy matematicko-fyzik\'aln{\'\i}},
     pages = {49--51},
     year = {2015},
     volume = {90},
     number = {4},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/RMF_2015_90_4_a7/}
}