@misc{PMFA_2021__66_4_a4,
     title = {Zpr\'avy a ozn\'amen{\'\i}},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {266--270},
     publisher = {mathdoc},
     volume = {66},
     number = {4},
     year = {2021},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/item/PMFA_2021__66_4_a4/}
}