@misc{PMFA_1980_25_6_a12,
     title = {Jubilea a zpr\'avy},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {354--356},
     year = {1980},
     volume = {25},
     number = {6},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1980_25_6_a12/}
}