@article{10_21136_CPMF_1905_120936,
     author = {Petr, Karel},
     title = {O jedn\'e v\v{e}t\v{e} pro mnoho\'uheln{\'\i}ky rovinn\'e},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky a fysiky},
     pages = {166--172},
     publisher = {mathdoc},
     volume = {34},
     number = {2},
     year = {1905},
     doi = {10.21136/CPMF.1905.120936},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPMF.1905.120936/}
}