@misc{PMFA_1981_26_5_a11,
     title = {Jubilea a zpr\'avy},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {294--299},
     year = {1981},
     volume = {26},
     number = {5},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1981_26_5_a11/}
}