@misc{PMFA_1974_19_4_a9,
     title = {Jubilea a zpr\'avy},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {225--228},
     year = {1974},
     volume = {19},
     number = {4},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1974_19_4_a9/}
}