@misc{UM_1992__0_4_a0,
     title = {\'Uvodem},
     journal = {U\v{c}itel matematiky},
     publisher = {mathdoc},
     volume = {00},
     number = {4},
     year = {1992},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/item/UM_1992__0_4_a0/}
}