@article{PMFA_1998_43_3_a4,
     author = {Netuka, Ivan and Vesel\'y, Ji\v{r}{\'\i}},
     title = {Ned\'avn\'e poznatky o \v{c}{\'\i}sle $\pi$},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {217--236},
     year = {1998},
     volume = {43},
     number = {3},
     zbl = {0936.11001},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1998_43_3_a4/}
}