@article{10_21136_CPM_1961_117368,
     author = {Kosm\'ak, Ladislav},
     title = {Pozn\'amka o spo\v{c}etn\'ych mno\v{z}in\'ach v rovin\v{e}},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {358--359},
     publisher = {mathdoc},
     volume = {086},
     number = {3},
     year = {1961},
     doi = {10.21136/CPM.1961.117368},
     mrnumber = {0131979},
     zbl = {0103.27904},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1961.117368/}
}