@misc{10_21136_CPMF_1930_108993,
     title = {Zpr\'avy},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky a fysiky},
     pages = {58--64},
     year = {1930},
     volume = {59},
     number = {1},
     doi = {10.21136/CPMF.1930.108993},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPMF.1930.108993/}
}