@article{10_21136_CPM_1970_117680,
     author = {Krys, Jarom{\'\i}r and Metelka, Josef},
     title = {Symetrick\'e k\v{r}ivky},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {7--22},
     publisher = {mathdoc},
     volume = {095},
     number = {1},
     year = {1970},
     doi = {10.21136/CPM.1970.117680},
     mrnumber = {0271816},
     zbl = {0191.19504},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1970.117680/}
}