@article{PMFA_2001__46_4_a0,
     author = {Stillwell, John},
     title = {P\v{r}{\'\i}b\v{e}h stodvacetist\v{e}nu v~${\mathbb R}^4$},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {265--280},
     publisher = {mathdoc},
     volume = {46},
     number = {4},
     year = {2001},
     zbl = {1055.52502},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/item/PMFA_2001__46_4_a0/}
}