@misc{PMFA_1964_9_2_a8,
     title = {Zaj{\'\i}mavosti z v\v{e}dy a techniky},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {123--124},
     year = {1964},
     volume = {9},
     number = {2},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1964_9_2_a8/}
}