@misc{PMFA_2017_62_1_a6,
     title = {Zpr\'avy a ozn\'amen{\'\i}},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {71--75},
     year = {2017},
     volume = {62},
     number = {1},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_2017_62_1_a6/}
}