@misc{PMFA_1961__6_4_a12,
     title = {Z \v{c}innosti {\v{C}AS}},
     journal = {Pokroky matematiky, fyziky a astronomie},
     publisher = {mathdoc},
     volume = {06},
     number = {4},
     year = {1961},
     language = {cz},
     url = {https://geodesic-test.mathdoc.fr/item/PMFA_1961__6_4_a12/}
}