@misc{UM_2013__21_4_a7,
     title = {Jak u\v{c}it \v{z}\'aky matematice ve v\v{e}ku 10-16 let},
     journal = {U\v{c}itel matematiky},
     publisher = {mathdoc},
     volume = {21},
     number = {4},
     year = {2013},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/item/UM_2013__21_4_a7/}
}