@misc{PMFA_2017_62_4_a6,
     title = {Zpr\'avy a ozn\'amen{\'\i}},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {300--303},
     year = {2017},
     volume = {62},
     number = {4},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_2017_62_4_a6/}
}