@article{RMF_2011__86_4_a5,
     author = {Volf, Ivo and Kabrhel, Pavel},
     title = {53. ro\v{c}n{\'\i}k {Fyzik\'aln{\'\i}} olympi\'ady, \'ulohy 1. kola kategori{\'\i} {E} a {F}},
     journal = {Rozhledy matematicko-fyzik\'aln{\'\i}},
     pages = {34--44},
     publisher = {mathdoc},
     volume = {86},
     number = {4},
     year = {2011},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/item/RMF_2011__86_4_a5/}
}