@article{UM_1992__0_1_a4,
     author = {Hrub\'y, Dag},
     title = {K u\v{c}ebnic{\'\i}m matematiky na gymn\'aziu},
     journal = {U\v{c}itel matematiky},
     pages = {9--10},
     publisher = {mathdoc},
     volume = {00},
     number = {1},
     year = {1992},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/item/UM_1992__0_1_a4/}
}