@misc{RMF_2005_80_4_a6,
     title = {47. ro\v{c}n{\'\i}k {Fyzik\'aln{\'\i}} olympi\'ady, kategorie {C,} {D.} {\'Ulohy} 1. kola},
     journal = {Rozhledy matematicko-fyzik\'aln{\'\i}},
     pages = {41--48},
     year = {2005},
     volume = {80},
     number = {4},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/RMF_2005_80_4_a6/}
}