@article{10_21136_CPMF_1880_109295,
     author = {Jung, Vil\'em},
     title = {Nov\'y \v{r}et\v{e}zec pro \v{c}{\'\i}slo $\pi$},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky a fysiky},
     pages = {157--159},
     publisher = {mathdoc},
     volume = {09},
     number = {4},
     year = {1880},
     doi = {10.21136/CPMF.1880.109295},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPMF.1880.109295/}
}