@article{PMFA_1975_20_3_a9,
     author = {Ouhrabka, Miroslav and Volf, Ivo},
     title = {Fyzik\'aln{\'\i} metaolympi\'ada},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {170},
     year = {1975},
     volume = {20},
     number = {3},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1975_20_3_a9/}
}