@article{RMF_2011_86_3_a8,
     author = {Volf, Ivo and Vyb{\'\i}ral, Bohumil},
     title = {Celost\'atn{\'\i} kolo 52. ro\v{c}n{\'\i}ku {Fyzik\'aln{\'\i}} olympi\'ady},
     journal = {Rozhledy matematicko-fyzik\'aln{\'\i}},
     pages = {52--55},
     year = {2011},
     volume = {86},
     number = {3},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/RMF_2011_86_3_a8/}
}