@article{UM_1992_0_1_a9,
     author = {Proch\'azka, Franti\v{s}ek},
     title = {Z \v{c}innosti {OS} didaktik\r{u} matematiky na {SO\v{S}}},
     journal = {U\v{c}itel matematiky},
     pages = {18},
     year = {1992},
     volume = {0},
     number = {1},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/UM_1992_0_1_a9/}
}