@article{PMFA_1993_38_3_a0,
     author = {Berger, Marcel},
     title = {Konvexita (1. \v{c}\'ast)},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {129--146},
     year = {1993},
     volume = {38},
     number = {3},
     zbl = {0810.52001},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1993_38_3_a0/}
}