@article{PMFA_1972_17_2_a9,
     author = {Vy\v{s}{\'\i}n, Jan},
     title = {Co nov\'eho p\v{r}in\'a\v{s}{\'\i} {Nico?}},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {104--107},
     year = {1972},
     volume = {17},
     number = {2},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1972_17_2_a9/}
}