@misc{PMFA_1977_22_2_a5,
     title = {Jubilea a zpr\'avy},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {106--111},
     year = {1977},
     volume = {22},
     number = {2},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1977_22_2_a5/}
}