@article{UM_1994_2_2_a1,
     author = {Kadle\v{c}ek, J.},
     title = {Kluci, pes a {\v{S}ed\'ak}},
     journal = {U\v{c}itel matematiky},
     pages = {2--5},
     year = {1994},
     volume = {2},
     number = {2},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/UM_1994_2_2_a1/}
}