@misc{PMFA_1968_13_6_a7,
     title = {Zpr\'avy},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {403--[404]},
     year = {1968},
     volume = {13},
     number = {6},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1968_13_6_a7/}
}