@misc{10_21136_CPMF_1939_120748,
     title = {Zpr\'avy},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky a fysiky},
     pages = {220--D224},
     year = {1939},
     volume = {68},
     number = {Suppl.},
     doi = {10.21136/CPMF.1939.120748},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPMF.1939.120748/}
}