@misc{PMFA_1976_21_3_a9,
     title = {Obsah},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {180},
     year = {1976},
     volume = {21},
     number = {3},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1976_21_3_a9/}
}