@article{10_21136_CPMF_1878_122880,
     author = {Zahradn{\'\i}k, Karel},
     title = {P\v{r}{\'\i}sp\v{e}vek ke trigonometrii},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky a fysiky},
     pages = {245--248},
     publisher = {mathdoc},
     volume = {07},
     number = {4},
     year = {1878},
     doi = {10.21136/CPMF.1878.122880},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPMF.1878.122880/}
}