@article{10_21136_CPM_1957_117250,
     author = {Sedl\'ak, Franti\v{s}ek and Kosm\'ak, Ladislav},
     title = {Studie {Fok\'aly.} {I}},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {160--164},
     year = {1957},
     volume = {82},
     number = {2},
     doi = {10.21136/CPM.1957.117250},
     mrnumber = {0088735},
     zbl = {0102.15903},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1957.117250/}
}