@article{UM_2013__21_3_a0,
     author = {Bachrat\'a, Katar{\'\i}na and Bachrat\'y, Hynek},
     title = {Budovanie matematick\'ych predst\'av pomocou manipul\'aci{\'\i}},
     journal = {U\v{c}itel matematiky},
     pages = {129--143},
     publisher = {mathdoc},
     volume = {21},
     number = {3},
     year = {2013},
     language = {sl},
     url = {http://geodesic.mathdoc.fr/item/UM_2013__21_3_a0/}
}