@article{UM_2000__8_1_a6,
     author = {Hrub\'y, Dag},
     title = {O jedn\'e \'uloze na extr\'em},
     journal = {U\v{c}itel matematiky},
     pages = {54--56},
     publisher = {mathdoc},
     volume = {08},
     number = {1},
     year = {2000},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/item/UM_2000__8_1_a6/}
}