@article{10_21136_CPM_1959_117315,
     author = {Leminger, Otakar},
     title = {O pravideln\'em $257$-\'uheln{\'\i}ku},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {371--373},
     publisher = {mathdoc},
     volume = {084},
     number = {3},
     year = {1959},
     doi = {10.21136/CPM.1959.117315},
     mrnumber = {0114148},
     zbl = {0088.13403},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1959.117315/}
}