@misc{PMFA_2019__64_4_a6,
     title = {Jubilea},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {247--248},
     publisher = {mathdoc},
     volume = {64},
     number = {4},
     year = {2019},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/item/PMFA_2019__64_4_a6/}
}