@misc{UM_1993_1_2_a20,
     title = {6. semin\'a\v{r} o filozofick\'ych ot\'azk\'ach matematiky a fyziky},
     journal = {U\v{c}itel matematiky},
     pages = {56},
     year = {1993},
     volume = {1},
     number = {2},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/UM_1993_1_2_a20/}
}