@misc{PMFA_1975__20_1_a6,
     title = {Jubilea a zpr\'avy},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {51--53},
     publisher = {mathdoc},
     volume = {20},
     number = {1},
     year = {1975},
     zbl = {0294.01036},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1975__20_1_a6/}
}