@misc{UM_1997_5_2_a8,
     title = {Letn{\'\i} \v{s}kola matematiky pro u\v{c}itele {SO\v{S}}},
     journal = {U\v{c}itel matematiky},
     pages = {118},
     year = {1997},
     volume = {5},
     number = {2},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/UM_1997_5_2_a8/}
}