@article{UM_2004__12_4_a5,
     author = {Zelinka, Bohdan},
     title = {Jak se d\v{e}laj{\'\i} z\'azraky. {Vzpom{\'\i}nka} na doc. {Franti\v{s}ka} {Du\v{s}ka}},
     journal = {U\v{c}itel matematiky},
     pages = {247--250},
     publisher = {mathdoc},
     volume = {12},
     number = {4},
     year = {2004},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/item/UM_2004__12_4_a5/}
}