@misc{PMFA_1993_38_5_a6,
     title = {Jubilea a zpr\'avy},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {304},
     year = {1993},
     volume = {38},
     number = {5},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1993_38_5_a6/}
}