@misc{10_21136_CPMF_1932_121705,
     title = {\'Ulohy},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky a fysiky},
     pages = {28--R32},
     year = {1932},
     volume = {61},
     number = {1},
     doi = {10.21136/CPMF.1932.121705},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPMF.1932.121705/}
}