@misc{PMFA_1973_18_1_a12,
     title = {Obsah},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {52},
     year = {1973},
     volume = {18},
     number = {1},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1973_18_1_a12/}
}