@misc{PMFA_1978_23_1_a13,
     title = {Jubilea a zpr\'avy},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {55--58},
     year = {1978},
     volume = {23},
     number = {1},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1978_23_1_a13/}
}