@article{10_21136_CPM_1973_117782,
     author = {Preiss, David},
     title = {Pozn\'amka k jednomu probl\'emu {K.} {Kart\'aka}},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {101--102},
     publisher = {mathdoc},
     volume = {098},
     number = {1},
     year = {1973},
     doi = {10.21136/CPM.1973.117782},
     zbl = {0256.26003},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1973.117782/}
}