@article{UM_1992__0_4_a9,
     author = {Eckertov\'a, Ludmila},
     title = {Ad: {"Ost\v{r}elovan\'a} koncepce" {(LN} 4.1.1992)},
     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_a9/}
}