@misc{PMFA_1956_1_4_a21,
     title = {V\'yznamn\'a v\'yro\v{c}{\'\i}  v r. 1956},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {464--465},
     year = {1956},
     volume = {1},
     number = {4},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1956_1_4_a21/}
}