@article{10_21136_CPMF_1948_123150,
     author = {B{\'\i}lek, Jan},
     title = {O jedn\'e rovinn\'e involuci $J_{11}$ druh\'e t\v{r}{\'\i}dy a jej{\'\i} degeneraci},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky a fysiky},
     pages = {17--30},
     publisher = {mathdoc},
     volume = {73},
     number = {1},
     year = {1948},
     doi = {10.21136/CPMF.1948.123150},
     mrnumber = {0026366},
     zbl = {0032.42801},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPMF.1948.123150/}
}