@article{AUPO_1971__11_1_a7,
     author = {Machala, Franti\v{s}ek},
     title = {O mno\v{z}in\v{e} st\v{r}ed\r{u} k\v{r}ivek konstantn{\'\i} k\v{r}ivosti hyperbolick\'e roviny, kter\'e se dot\'ykaj{\'\i} dvou r\r{u}zn\'ych k\v{r}ivek konstantn{\'\i} k\v{r}ivosti},
     journal = {Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica},
     pages = {89--101},
     publisher = {mathdoc},
     volume = {11},
     number = {1},
     year = {1971},
     mrnumber = {0319031},
     zbl = {0278.50012},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/item/AUPO_1971__11_1_a7/}
}