@misc{PMFA_1975_20_3_a13,
     title = {Obsah},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {180},
     year = {1975},
     volume = {20},
     number = {3},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1975_20_3_a13/}
}