@article{UM_2003__11_4_a5,
     author = {Hrub\'y, Dag},
     title = {Zaj{\'\i}mav\'e rovnice},
     journal = {U\v{c}itel matematiky},
     pages = {251--253},
     publisher = {mathdoc},
     volume = {11},
     number = {4},
     year = {2003},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/item/UM_2003__11_4_a5/}
}