@article{RMF_2010_85_1_a9,
     author = {T\"opfer, Pavel},
     title = {St\v{r}edoevropsk\'a olympi\'ada v informatice {CEOI} 2009},
     journal = {Rozhledy matematicko-fyzik\'aln{\'\i}},
     pages = {46--47},
     year = {2010},
     volume = {85},
     number = {1},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/RMF_2010_85_1_a9/}
}