@article{PMFA_1980__25_3_a3,
     author = {Buzek, Otakar and \v{C}erm\'ak, Jan},
     title = {\v{C}as a kmito\v{c}et},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {144--155},
     publisher = {mathdoc},
     volume = {25},
     number = {3},
     year = {1980},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1980__25_3_a3/}
}