@article{UM_1993_1_4_a19,
     author = {M{\'\i}da, J.},
     title = {\'Ulohy z n\'adra\v{z}{\'\i}},
     journal = {U\v{c}itel matematiky},
     pages = {52--53},
     year = {1993},
     volume = {1},
     number = {4},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/UM_1993_1_4_a19/}
}