@misc{PMFA_2015_60_2_a7,
     title = {Jubilea},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {171--173},
     year = {2015},
     volume = {60},
     number = {2},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_2015_60_2_a7/}
}